45531166731 has 16 divisors (see below), whose sum is σ = 61319462400. Its totient is φ = 30048591200.

The previous prime is 45531166697. The next prime is 45531166799. The reversal of 45531166731 is 13766113554.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 45531166731 - 2¹⁷ = 45531035659 is a prime.

It is a super-2 number, since 2×45531166731² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (45531166631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3090220 + ... + 3104918.

It is an arithmetic number, because the mean of its divisors is an integer number (3832466400).

Almost surely, 2^45531166731 is an apocalyptic number.

45531166731 is a deficient number, since it is larger than the sum of its proper divisors (15788295669).

45531166731 is a wasteful number, since it uses less digits than its factorization.

45531166731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25026.

The product of its digits is 226800, while the sum is 42.

The spelling of 45531166731 in words is "forty-five billion, five hundred thirty-one million, one hundred sixty-six thousand, seven hundred thirty-one".