89665997616 has 480 divisors, whose sum is σ = 298733879808. Its totient is φ = 24843386880.

The previous prime is 89665997609. The next prime is 89665997639. The reversal of 89665997616 is 61679956698.

It is a super-2 number, since 2×89665997616² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 95694300 + ... + 95695236.

Almost surely, 2^89665997616 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 89665997616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149366939904).

89665997616 is an abundant number, since it is smaller than the sum of its proper divisors (209067882192).

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

89665997616 is a wasteful number, since it uses less digits than its factorization.

89665997616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109 (or 1100 counting only the distinct ones).

The product of its digits is 264539520, while the sum is 72.

The spelling of 89665997616 in words is "eighty-nine billion, six hundred sixty-five million, nine hundred ninety-seven thousand, six hundred sixteen".