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487611643815868 = 2211133131727866737
BaseRepresentation
bin110111011011110101110111…
…0110100010110011110111100
32100221111012212211211022012211
41232313223232310112132330
51002403012121304101433
64445021410254510204
7204464531045013235
oct15667535664263674
92327435784738184
10487611643815868
11131405a33a198a0
12468324a0b05364
1317c10771a8a660
14885a75ac9a08c
153b58d704488cd
hex1bb7aeed167bc

487611643815868 has 96 divisors (see below), whose sum is σ = 1034874854350848. Its totient is φ = 197986077619200.

The previous prime is 487611643815859. The next prime is 487611643815917. The reversal of 487611643815868 is 868518346116784.

It is a junction number, because it is equal to n+sod(n) for n = 487611643815794 and 487611643815803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 562149796 + ... + 563016532.

It is an arithmetic number, because the mean of its divisors is an integer number (10779946399488).

Almost surely, 2487611643815868 is an apocalyptic number.

It is an amenable number.

487611643815868 is an abundant number, since it is smaller than the sum of its proper divisors (547263210534980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

487611643815868 is a wasteful number, since it uses less digits than its factorization.

487611643815868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898523 (or 898521 counting only the distinct ones).

The product of its digits is 1486356480, while the sum is 76.

The spelling of 487611643815868 in words is "four hundred eighty-seven trillion, six hundred eleven billion, six hundred forty-three million, eight hundred fifteen thousand, eight hundred sixty-eight".

Divisors: 1 2 4 11 13 22 26 31 44 52 62 124 143 286 341 403 572 682 806 1364 1612 4433 8866 17732 31727 63454 126908 348997 412451 697994 824902 866737 983537 1395988 1649804 1733474 1967074 3466948 3934148 4536961 9073922 9534107 10818907 11267581 12785981 18147844 19068214 21637814 22535162 25571962 26868847 38136428 43275628 45070324 51143924 53737694 107475388 123943391 140645791 247886782 281291582 295557317 349295011 495773564 562583164 591114634 698590022 1182229268 1397180044 3842245121 7684490242 15368980484 27498964799 54997929598 109995859196 302488612789 357486542387 604977225578 714973084774 852467908769 1209954451156 1429946169548 1704935817538 3409871635076 3932351966257 7864703932514 9377146996459 11082082813997 15729407865028 18754293992918 22164165627994 37508587985836 44328331255988 121902910953967 243805821907934 487611643815868