55646464655 has 16 divisors (see below), whose sum is σ = 67023390720. Its totient is φ = 44352336672.

The previous prime is 55646464631. The next prime is 55646464669.

55646464655 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 55646464655 - 2¹² = 55646460559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55646464655.

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, 1817282 + ... + 1847648.

It is an arithmetic number, because the mean of its divisors is an integer number (4188961920).

Almost surely, 2^55646464655 is an apocalyptic number.

55646464655 is a deficient number, since it is larger than the sum of its proper divisors (11376926065).

55646464655 is a wasteful number, since it uses less digits than its factorization.

55646464655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31718.

The product of its digits is 51840000, while the sum is 56.

The spelling of 55646464655 in words is "fifty-five billion, six hundred forty-six million, four hundred sixty-four thousand, six hundred fifty-five".