72890166678 has 48 divisors (see below), whose sum is σ = 178506544320. Its totient is φ = 19729667664.

The previous prime is 72890166641. The next prime is 72890166689. The reversal of 72890166678 is 87666109827.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6518776 + ... + 6529947.

It is an arithmetic number, because the mean of its divisors is an integer number (3718886340).

Almost surely, 2^72890166678 is an apocalyptic number.

72890166678 is an abundant number, since it is smaller than the sum of its proper divisors (105616377642).

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

72890166678 is a wasteful number, since it uses less digits than its factorization.

72890166678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13048761 (or 13048754 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 60.

The spelling of 72890166678 in words is "seventy-two billion, eight hundred ninety million, one hundred sixty-six thousand, six hundred seventy-eight".