5566165731 has 36 divisors (see below), whose sum is σ = 9383365992. Its totient is φ = 3170228544.

The previous prime is 5566165711. The next prime is 5566165753. The reversal of 5566165731 is 1375616655.

5566165731 is a `hidden beast` number, since 5 + 5 + 66 + 16 + 573 + 1 = 666.

It is not a de Polignac number, because 5566165731 - 2⁹ = 5566165219 is a prime.

It is a super-2 number, since 2×5566165731² = 61964401889917528722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5566165711) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 114831 + ... + 155943.

Almost surely, 2^5566165731 is an apocalyptic number.

5566165731 is a deficient number, since it is larger than the sum of its proper divisors (3817200261).

5566165731 is a wasteful number, since it uses less digits than its factorization.

5566165731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41440 (or 41430 counting only the distinct ones).

The product of its digits is 567000, while the sum is 45.

The square root of 5566165731 is about 74606.7405198753. The cubic root of 5566165731 is about 1772.2243976726.

The spelling of 5566165731 in words is "five billion, five hundred sixty-six million, one hundred sixty-five thousand, seven hundred thirty-one".