56653635665 has 32 divisors (see below), whose sum is σ = 74941925760. Its totient is φ = 41112160320.

The previous prime is 56653635607. The next prime is 56653635697.

56653635665 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56653635665 - 2⁶ = 56653635601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56653635665.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3098771 + ... + 3116999.

It is an arithmetic number, because the mean of its divisors is an integer number (2341935180).

Almost surely, 2^56653635665 is an apocalyptic number.

56653635665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56653635665 is a deficient number, since it is larger than the sum of its proper divisors (18288290095).

56653635665 is a wasteful number, since it uses less digits than its factorization.

56653635665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18734 (or 18712 counting only the distinct ones).

The product of its digits is 43740000, while the sum is 56.

The spelling of 56653635665 in words is "fifty-six billion, six hundred fifty-three million, six hundred thirty-five thousand, six hundred sixty-five".