72684973880 has 32 divisors (see below), whose sum is σ = 163587695040. Its totient is φ = 29065722240.

The previous prime is 72684973843. The next prime is 72684973897. The reversal of 72684973880 is 8837948627.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114944 + ... + 398223.

It is an arithmetic number, because the mean of its divisors is an integer number (5112115470).

Almost surely, 2^72684973880 is an apocalyptic number.

It is an amenable number.

72684973880 is an abundant number, since it is smaller than the sum of its proper divisors (90902721160).

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

72684973880 is a wasteful number, since it uses less digits than its factorization.

72684973880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516719 (or 516715 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 62.

The spelling of 72684973880 in words is "seventy-two billion, six hundred eighty-four million, nine hundred seventy-three thousand, eight hundred eighty".