56690072789 has 6 divisors (see below), whose sum is σ = 65945594934. Its totient is φ = 48591490920.

The previous prime is 56690072783. The next prime is 56690072797. The reversal of 56690072789 is 98727009665.

It can be written as a sum of positive squares in only one way, i.e., 51775361764 + 4914711025 = 227542^2 + 70105^2 .

It is a de Polignac number, because none of the positive numbers 2^k-56690072789 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 (56690072783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 578470082 + ... + 578470179.

It is an arithmetic number, because the mean of its divisors is an integer number (10990932489).

Almost surely, 2^56690072789 is an apocalyptic number.

It is an amenable number.

56690072789 is a deficient number, since it is larger than the sum of its proper divisors (9255522145).

56690072789 is a wasteful number, since it uses less digits than its factorization.

56690072789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156940275 (or 1156940268 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 59.

The spelling of 56690072789 in words is "fifty-six billion, six hundred ninety million, seventy-two thousand, seven hundred eighty-nine".