5665661610056 has 24 divisors (see below), whose sum is σ = 12357501726870. Its totient is φ = 2428140689856.

The previous prime is 5665661609989. The next prime is 5665661610067. The reversal of 5665661610056 is 6500161665665.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3468347522500 + 2197314087556 = 1862350^2 + 1482334^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7226608805 + ... + 7226609588.

Almost surely, 2^{5665661610056} is an apocalyptic number.

5665661610056 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

5665661610056 is an abundant number, since it is smaller than the sum of its proper divisors (6691840116814).

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

5665661610056 is a wasteful number, since it uses less digits than its factorization.

5665661610056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14453218413 (or 14453218402 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 53.

The spelling of 5665661610056 in words is "five trillion, six hundred sixty-five billion, six hundred sixty-one million, six hundred ten thousand, fifty-six".