72116432528 has 80 divisors (see below), whose sum is σ = 170393915520. Its totient is φ = 28879193088.

The previous prime is 72116432497. The next prime is 72116432543. The reversal of 72116432528 is 82523461127.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 76775 + ... + 387462.

It is an arithmetic number, because the mean of its divisors is an integer number (2129923944).

Almost surely, 2^72116432528 is an apocalyptic number.

It is an amenable number.

72116432528 is an abundant number, since it is smaller than the sum of its proper divisors (98277482992).

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

72116432528 is a wasteful number, since it uses less digits than its factorization.

72116432528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464344 (or 464338 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The spelling of 72116432528 in words is "seventy-two billion, one hundred sixteen million, four hundred thirty-two thousand, five hundred twenty-eight".