56908737129 has 16 divisors (see below), whose sum is σ = 81729401600. Its totient is φ = 35106489936.

The previous prime is 56908737059. The next prime is 56908737187. The reversal of 56908737129 is 92173780965.

It is not a de Polignac number, because 56908737129 - 2¹² = 56908733033 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56908737029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11606839 + ... + 11611740.

It is an arithmetic number, because the mean of its divisors is an integer number (5108087600).

Almost surely, 2^56908737129 is an apocalyptic number.

It is an amenable number.

56908737129 is a deficient number, since it is larger than the sum of its proper divisors (24820664471).

56908737129 is a wasteful number, since it uses less digits than its factorization.

56908737129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23218644.

The product of its (nonzero) digits is 5715360, while the sum is 57.

The spelling of 56908737129 in words is "fifty-six billion, nine hundred eight million, seven hundred thirty-seven thousand, one hundred twenty-nine".