56644823535 has 16 divisors (see below), whose sum is σ = 91101316704. Its totient is φ = 30054039552.

The previous prime is 56644823527. The next prime is 56644823567. The reversal of 56644823535 is 53532844665.

It is not a de Polignac number, because 56644823535 - 2³ = 56644823527 is a prime.

It is a super-2 number, since 2×56644823535² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9780322 + ... + 9786111.

It is an arithmetic number, because the mean of its divisors is an integer number (5693832294).

Almost surely, 2^56644823535 is an apocalyptic number.

56644823535 is a deficient number, since it is larger than the sum of its proper divisors (34456493169).

56644823535 is a wasteful number, since it uses less digits than its factorization.

56644823535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19566634.

The product of its digits is 10368000, while the sum is 51.

The spelling of 56644823535 in words is "fifty-six billion, six hundred forty-four million, eight hundred twenty-three thousand, five hundred thirty-five".