56510611563 has 24 divisors (see below), whose sum is σ = 88758612480. Its totient is φ = 31883014800.

The previous prime is 56510611541. The next prime is 56510611579. The reversal of 56510611563 is 36511601565.

It is not a de Polignac number, because 56510611563 - 2¹⁰ = 56510610539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56510612563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2421463 + ... + 2444688.

It is an arithmetic number, because the mean of its divisors is an integer number (3698275520).

Almost surely, 2^56510611563 is an apocalyptic number.

56510611563 is a deficient number, since it is larger than the sum of its proper divisors (32248000917).

56510611563 is a wasteful number, since it uses less digits than its factorization.

56510611563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4866247 (or 4866240 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 39.

The spelling of 56510611563 in words is "fifty-six billion, five hundred ten million, six hundred eleven thousand, five hundred sixty-three".