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56878081327 = 317173794481
BaseRepresentation
bin110100111110001100…
…101010010100101111
312102210221010220102201
4310332030222110233
51412441242100302
642043542402331
74052330466664
oct647614522457
9172727126381
1056878081327
1122138215391
12b0344303a7
135495a29632
142a77dd1a6b
15172d629c87
hexd3e32a52f

56878081327 has 32 divisors (see below), whose sum is σ = 61133045760. Its totient is φ = 52835328000.

The previous prime is 56878081241. The next prime is 56878081331. The reversal of 56878081327 is 72318087865.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 56878081327 - 219 = 56877557039 is a prime.

It is a super-2 number, since 2×568780813272 (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56878081367) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12690927 + ... + 12695407.

It is an arithmetic number, because the mean of its divisors is an integer number (1910407680).

Almost surely, 256878081327 is an apocalyptic number.

56878081327 is a deficient number, since it is larger than the sum of its proper divisors (4254964433).

56878081327 is a wasteful number, since it uses less digits than its factorization.

56878081327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4735.

The product of its (nonzero) digits is 4515840, while the sum is 55.

The spelling of 56878081327 in words is "fifty-six billion, eight hundred seventy-eight million, eighty-one thousand, three hundred twenty-seven".

Divisors: 1 31 71 73 79 2201 2263 2449 4481 5183 5609 5767 138911 160673 173879 178777 318151 327113 353999 409457 9862681 10140503 10973969 12693167 23225023 25133929 25841927 719975713 779151799 801099737 1834776817 56878081327