5665661610057 has 16 divisors (see below), whose sum is σ = 8620426074880. Its totient is φ = 3675023746416.

The previous prime is 5665661609989. The next prime is 5665661610067. The reversal of 5665661610057 is 7500161665665.

5665661610057 is a `hidden beast` number, since 5 + 6 + 6 + 5 + 6 + 616 + 10 + 0 + 5 + 7 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-5665661610057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5665661609985 and 5665661610012.

It is not an unprimeable number, because it can be changed into a prime (5665661610067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2835665473 + ... + 2835667470.

It is an arithmetic number, because the mean of its divisors is an integer number (538776629680).

Almost surely, 2^{5665661610057} is an apocalyptic number.

It is an amenable number.

5665661610057 is a deficient number, since it is larger than the sum of its proper divisors (2954764464823).

5665661610057 is a wasteful number, since it uses less digits than its factorization.

5665661610057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5671332989 (or 5671332983 counting only the distinct ones).

The product of its (nonzero) digits is 6804000, while the sum is 54.

The spelling of 5665661610057 in words is "five trillion, six hundred sixty-five billion, six hundred sixty-one million, six hundred ten thousand, fifty-seven".