90204898780 has 12 divisors (see below), whose sum is σ = 189430287480. Its totient is φ = 36081959504.

The previous prime is 90204898757. The next prime is 90204898793. The reversal of 90204898780 is 8789840209.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2255122450 + ... + 2255122489.

It is an arithmetic number, because the mean of its divisors is an integer number (15785857290).

Almost surely, 2^90204898780 is an apocalyptic number.

It is an amenable number.

90204898780 is an abundant number, since it is smaller than the sum of its proper divisors (99225388700).

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

90204898780 is a wasteful number, since it uses less digits than its factorization.

90204898780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4510244948 (or 4510244946 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 55.

The spelling of 90204898780 in words is "ninety billion, two hundred four million, eight hundred ninety-eight thousand, seven hundred eighty".