99090090180 has 96 divisors (see below), whose sum is σ = 308851025280. Its totient is φ = 26375103360.

The previous prime is 99090090173. The next prime is 99090090221. The reversal of 99090090180 is 8109009099.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122547 + ... + 461733.

It is an arithmetic number, because the mean of its divisors is an integer number (3217198180).

Almost surely, 2^99090090180 is an apocalyptic number.

99090090180 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99090090180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154425512640).

99090090180 is an abundant number, since it is smaller than the sum of its proper divisors (209760935100).

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

99090090180 is a wasteful number, since it uses less digits than its factorization.

99090090180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339746 (or 339738 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 45.

The spelling of 99090090180 in words is "ninety-nine billion, ninety million, ninety thousand, one hundred eighty".