45009130581 has 24 divisors (see below), whose sum is σ = 67049016320. Its totient is φ = 29077465536.

The previous prime is 45009130567. The next prime is 45009130597. The reversal of 45009130581 is 18503190054.

45009130581 is a `hidden beast` number, since 45 + 0 + 0 + 9 + 1 + 30 + 581 = 666.

It is not a de Polignac number, because 45009130581 - 2⁵ = 45009130549 is a prime.

It is a super-2 number, since 2×45009130581² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45009130501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 408736 + ... + 507033.

Almost surely, 2^45009130581 is an apocalyptic number.

It is an amenable number.

45009130581 is a deficient number, since it is larger than the sum of its proper divisors (22039885739).

45009130581 is a wasteful number, since it uses less digits than its factorization.

45009130581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915945 (or 915942 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 45009130581 in words is "forty-five billion, nine million, one hundred thirty thousand, five hundred eighty-one".