73172807464 has 128 divisors (see below), whose sum is σ = 152583782400. Its totient is φ = 32744448000.

The previous prime is 73172807437. The next prime is 73172807503. The reversal of 73172807464 is 46470827137.

It is a happy number.

It is a super-2 number, since 2×73172807464² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71667274 + ... + 71668294.

It is an arithmetic number, because the mean of its divisors is an integer number (1192060800).

Almost surely, 2^73172807464 is an apocalyptic number.

It is an amenable number.

73172807464 is an abundant number, since it is smaller than the sum of its proper divisors (79410974936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73172807464 is a wasteful number, since it uses less digits than its factorization.

73172807464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355 (or 1351 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 49.

The spelling of 73172807464 in words is "seventy-three billion, one hundred seventy-two million, eight hundred seven thousand, four hundred sixty-four".