56510766503 has 4 divisors (see below), whose sum is σ = 56917318920. Its totient is φ = 56104214088.

The previous prime is 56510766493. The next prime is 56510766517. The reversal of 56510766503 is 30566701565.

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-56510766503 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 (56510766583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203276000 + ... + 203276277.

It is an arithmetic number, because the mean of its divisors is an integer number (14229329730).

Almost surely, 2^56510766503 is an apocalyptic number.

56510766503 is a deficient number, since it is larger than the sum of its proper divisors (406552417).

56510766503 is a wasteful number, since it uses less digits than its factorization.

56510766503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406552416.

The product of its (nonzero) digits is 567000, while the sum is 44.

The spelling of 56510766503 in words is "fifty-six billion, five hundred ten million, seven hundred sixty-six thousand, five hundred three".