89981537100 has 432 divisors, whose sum is σ = 327292051968. Its totient is φ = 18918627840.

The previous prime is 89981537077. The next prime is 89981537137. The reversal of 89981537100 is 173518998.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 70133059 + ... + 70134341.

Almost surely, 2^89981537100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89981537100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163646025984).

89981537100 is an abundant number, since it is smaller than the sum of its proper divisors (237310514868).

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

89981537100 is a wasteful number, since it uses less digits than its factorization.

89981537100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694 (or 1680 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 51.

The spelling of 89981537100 in words is "eighty-nine billion, nine hundred eighty-one million, five hundred thirty-seven thousand, one hundred".