55965683646 has 40 divisors (see below), whose sum is σ = 132781334400. Its totient is φ = 17557860672.

The previous prime is 55965683597. The next prime is 55965683659. The reversal of 55965683646 is 64638656955.

55965683646 is a `hidden beast` number, since 5 + 5 + 9 + 6 + 568 + 3 + 64 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10158046 + ... + 10163553.

It is an arithmetic number, because the mean of its divisors is an integer number (3319533360).

Almost surely, 2^55965683646 is an apocalyptic number.

55965683646 is an abundant number, since it is smaller than the sum of its proper divisors (76815650754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55965683646 is a wasteful number, since it uses less digits than its factorization.

55965683646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20321630 (or 20321621 counting only the distinct ones).

The product of its digits is 139968000, while the sum is 63.

The spelling of 55965683646 in words is "fifty-five billion, nine hundred sixty-five million, six hundred eighty-three thousand, six hundred forty-six".