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70671070780 = 22537739713487
BaseRepresentation
bin100000111010001010…
…0101111011000111100
320202102012002100220221
41001310110233120330
52124213243231110
652244342151124
75051203122142
oct1016424573074
9222365070827
1070671070780
1127a75a82522
12118437224a4
13688349825b
1435c5bbd592
151c894bb7da
hex107452f63c

70671070780 has 96 divisors (see below), whose sum is σ = 156112701696. Its totient is φ = 26845986816.

The previous prime is 70671070777. The next prime is 70671070793. The reversal of 70671070780 is 8707017607.

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, 5233197 + ... + 5246683.

It is an arithmetic number, because the mean of its divisors is an integer number (1626173976).

Almost surely, 270671070780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70671070780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78056350848).

70671070780 is an abundant number, since it is smaller than the sum of its proper divisors (85441630916).

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

70671070780 is a wasteful number, since it uses less digits than its factorization.

70671070780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13703 (or 13701 counting only the distinct ones).

The product of its (nonzero) digits is 115248, while the sum is 43.

The spelling of 70671070780 in words is "seventy billion, six hundred seventy-one million, seventy thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 37 73 74 97 146 148 185 194 292 365 370 388 485 730 740 970 1460 1940 2701 3589 5402 7081 7178 10804 13487 13505 14162 14356 17945 26974 27010 28324 35405 35890 53948 54020 67435 70810 71780 134870 141620 261997 269740 499019 523994 984551 998038 1047988 1308239 1309985 1969102 1996076 2495095 2616478 2619970 3938204 4922755 4990190 5232956 5239940 6541195 9845510 9980380 13082390 19691020 26164780 36428387 48404843 72856774 95501447 96809686 145713548 182141935 191002894 193619372 242024215 364283870 382005788 477507235 484048430 728567740 955014470 968096860 1910028940 3533553539 7067107078 14134214156 17667767695 35335535390 70671070780