89187972064 has 24 divisors (see below), whose sum is σ = 175596488928. Its totient is φ = 44592038400.

The previous prime is 89187972053. The next prime is 89187972073. The reversal of 89187972064 is 46027978198.

It is a junction number, because it is equal to n+sod(n) for n = 89187971993 and 89187972011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 932889 + ... + 1024039.

It is an arithmetic number, because the mean of its divisors is an integer number (7316520372).

Almost surely, 2^89187972064 is an apocalyptic number.

It is an amenable number.

89187972064 is a deficient number, since it is larger than the sum of its proper divisors (86408516864).

89187972064 is a wasteful number, since it uses less digits than its factorization.

89187972064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121738 (or 121730 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 61.

The spelling of 89187972064 in words is "eighty-nine billion, one hundred eighty-seven million, nine hundred seventy-two thousand, sixty-four".