89640988712 has 32 divisors (see below), whose sum is σ = 194142251520. Its totient is φ = 38349085440.

The previous prime is 89640988709. The next prime is 89640988741. The reversal of 89640988712 is 21788904698.

It is a super-2 number, since 2×89640988712² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29958728 + ... + 29961719.

It is an arithmetic number, because the mean of its divisors is an integer number (6066945360).

Almost surely, 2^89640988712 is an apocalyptic number.

It is an amenable number.

89640988712 is an abundant number, since it is smaller than the sum of its proper divisors (104501262808).

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

89640988712 is a wasteful number, since it uses less digits than its factorization.

89640988712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59920481 (or 59920477 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 62.

The spelling of 89640988712 in words is "eighty-nine billion, six hundred forty million, nine hundred eighty-eight thousand, seven hundred twelve".