56785491737 has 8 divisors (see below), whose sum is σ = 61840726920. Its totient is φ = 51828416640.

The previous prime is 56785491701. The next prime is 56785491739. The reversal of 56785491737 is 73719458765.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 41011216 + 56744480521 = 6404^2 + 238211^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56785491737 - 2¹² = 56785487641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56785491737.

It is not an unprimeable number, because it can be changed into a prime (56785491739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24538814 + ... + 24541127.

It is an arithmetic number, because the mean of its divisors is an integer number (7730090865).

Almost surely, 2^56785491737 is an apocalyptic number.

It is an amenable number.

56785491737 is a deficient number, since it is larger than the sum of its proper divisors (5055235183).

56785491737 is a wasteful number, since it uses less digits than its factorization.

56785491737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49080043.

The product of its digits is 44452800, while the sum is 62.

The spelling of 56785491737 in words is "fifty-six billion, seven hundred eighty-five million, four hundred ninety-one thousand, seven hundred thirty-seven".