5665473072561 has 32 divisors (see below), whose sum is σ = 7796301494400. Its totient is φ = 3656853527040.

The previous prime is 5665473072503. The next prime is 5665473072587. The reversal of 5665473072561 is 1652703745665.

It is not a de Polignac number, because 5665473072561 - 2²² = 5665468878257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5665473072661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22927255 + ... + 23173043.

It is an arithmetic number, because the mean of its divisors is an integer number (243634421700).

Almost surely, 2^{5665473072561} is an apocalyptic number.

It is an amenable number.

5665473072561 is a deficient number, since it is larger than the sum of its proper divisors (2130828421839).

5665473072561 is a wasteful number, since it uses less digits than its factorization.

5665473072561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246849.

The product of its (nonzero) digits is 31752000, while the sum is 57.

The spelling of 5665473072561 in words is "five trillion, six hundred sixty-five billion, four hundred seventy-three million, seventy-two thousand, five hundred sixty-one".