89168440788 has 144 divisors (see below), whose sum is σ = 267293272064. Its totient is φ = 25461928800.

The previous prime is 89168440771. The next prime is 89168440811. The reversal of 89168440788 is 88704486198.

89168440788 is a `hidden beast` number, since 8 + 91 + 68 + 4 + 407 + 88 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18007713 + ... + 18012663.

Almost surely, 2^89168440788 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 89168440788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133646636032).

89168440788 is an abundant number, since it is smaller than the sum of its proper divisors (178124831276).

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

89168440788 is a wasteful number, since it uses less digits than its factorization.

89168440788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7624 (or 7610 counting only the distinct ones).

The product of its (nonzero) digits is 24772608, while the sum is 63.

The spelling of 89168440788 in words is "eighty-nine billion, one hundred sixty-eight million, four hundred forty thousand, seven hundred eighty-eight".