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513401111660 = 225193917344921
BaseRepresentation
bin1110111100010010001…
…01110100010001101100
31211002011210202201110102
413132021011310101230
531402421141033120
61031504143330232
752043362305623
oct7361105642154
91732153681412
10513401111660
111888065a7a98
1283600bb0978
133954b660048
141abc4d626ba
15d54c3b7d75
hex778917446c

513401111660 has 48 divisors (see below), whose sum is σ = 1135179692640. Its totient is φ = 194501767680.

The previous prime is 513401111659. The next prime is 513401111711. The reversal of 513401111660 is 66111104315.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1316000 + ... + 1660920.

It is an arithmetic number, because the mean of its divisors is an integer number (23649576930).

Almost surely, 2513401111660 is an apocalyptic number.

It is an amenable number.

513401111660 is an abundant number, since it is smaller than the sum of its proper divisors (621778580980).

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

513401111660 is a wasteful number, since it uses less digits than its factorization.

513401111660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348866 (or 348864 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

Adding to 513401111660 its reverse (66111104315), we get a palindrome (579512215975).

The spelling of 513401111660 in words is "five hundred thirteen billion, four hundred one million, one hundred eleven thousand, six hundred sixty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 380 3917 7834 15668 19585 39170 74423 78340 148846 297692 344921 372115 689842 744230 1379684 1488460 1724605 3449210 6553499 6898420 13106998 26213996 32767495 65534990 131069980 1351055557 2702111114 5404222228 6755277785 13510555570 25670055583 27021111140 51340111166 102680222332 128350277915 256700555830 513401111660