72880073658 has 72 divisors (see below), whose sum is σ = 189613008000. Its totient is φ = 20151164880.

The previous prime is 72880073647. The next prime is 72880073659. The reversal of 72880073658 is 85637008827.

It is not an unprimeable number, because it can be changed into a prime (72880073659) 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, 1305408 + ... + 1360091.

It is an arithmetic number, because the mean of its divisors is an integer number (2633514000).

Almost surely, 2^72880073658 is an apocalyptic number.

72880073658 is an abundant number, since it is smaller than the sum of its proper divisors (116732934342).

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

72880073658 is a wasteful number, since it uses less digits than its factorization.

72880073658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2665552 (or 2665542 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The spelling of 72880073658 in words is "seventy-two billion, eight hundred eighty million, seventy-three thousand, six hundred fifty-eight".