45729664731 has 12 divisors (see below), whose sum is σ = 66059693440. Its totient is φ = 30483797040.

The previous prime is 45729664621. The next prime is 45729664741. The reversal of 45729664731 is 13746692754.

45729664731 is a `hidden beast` number, since 4 + 572 + 9 + 6 + 64 + 7 + 3 + 1 = 666.

It is not a de Polignac number, because 45729664731 - 2²⁶ = 45662555867 is a prime.

It is a super-2 number, since 2×45729664731² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45729664741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108040 + ... + 321141.

Almost surely, 2^45729664731 is an apocalyptic number.

45729664731 is a deficient number, since it is larger than the sum of its proper divisors (20330028709).

45729664731 is a wasteful number, since it uses less digits than its factorization.

45729664731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441026 (or 441023 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 54.

The spelling of 45729664731 in words is "forty-five billion, seven hundred twenty-nine million, six hundred sixty-four thousand, seven hundred thirty-one".