90981373184 has 144 divisors (see below), whose sum is σ = 205546209792. Its totient is φ = 39904026624.

The previous prime is 90981373163. The next prime is 90981373229. The reversal of 90981373184 is 48137318909.

It is a super-2 number, since 2×90981373184² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5286257 + ... + 5303439.

Almost surely, 2^90981373184 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 90981373184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102773104896).

90981373184 is an abundant number, since it is smaller than the sum of its proper divisors (114564836608).

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

90981373184 is a wasteful number, since it uses less digits than its factorization.

90981373184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17292 (or 17278 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 53.

The spelling of 90981373184 in words is "ninety billion, nine hundred eighty-one million, three hundred seventy-three thousand, one hundred eighty-four".