5665161556570 has 32 divisors (see below), whose sum is σ = 10405411301520. Its totient is φ = 2219944995840.

The previous prime is 5665161556553. The next prime is 5665161556603. The reversal of 5665161556570 is 756551615665.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1970466335289 + 3694695221281 = 1403733^2 + 1922159^2 .

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, 7735135 + ... + 8435794.

Almost surely, 2^{5665161556570} is an apocalyptic number.

5665161556570 is a deficient number, since it is larger than the sum of its proper divisors (4740249744950).

5665161556570 is a wasteful number, since it uses less digits than its factorization.

5665161556570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16171650.

The product of its (nonzero) digits is 28350000, while the sum is 58.

The spelling of 5665161556570 in words is "five trillion, six hundred sixty-five billion, one hundred sixty-one million, five hundred fifty-six thousand, five hundred seventy".