56908444511 has 4 divisors (see below), whose sum is σ = 57057030912. Its totient is φ = 56759858112.

The previous prime is 56908444499. The next prime is 56908444601. The reversal of 56908444511 is 11544480965.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56908444511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56908444811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74292626 + ... + 74293391.

It is an arithmetic number, because the mean of its divisors is an integer number (14264257728).

Almost surely, 2^56908444511 is an apocalyptic number.

56908444511 is a deficient number, since it is larger than the sum of its proper divisors (148586401).

56908444511 is a wasteful number, since it uses less digits than its factorization.

56908444511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148586400.

The product of its (nonzero) digits is 691200, while the sum is 47.

The spelling of 56908444511 in words is "fifty-six billion, nine hundred eight million, four hundred forty-four thousand, five hundred eleven".