90918292020 has 48 divisors (see below), whose sum is σ = 254657632320. Its totient is φ = 24236647936.

The previous prime is 90918292019. The next prime is 90918292133. The reversal of 90918292020 is 2029281909.

It is a happy number.

It is a super-2 number, since 2×90918292020² (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, 77925 + ... + 433484.

It is an arithmetic number, because the mean of its divisors is an integer number (5305367340).

Almost surely, 2^90918292020 is an apocalyptic number.

It is an amenable number.

90918292020 is an abundant number, since it is smaller than the sum of its proper divisors (163739340300).

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

90918292020 is a wasteful number, since it uses less digits than its factorization.

90918292020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514384 (or 514382 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 42.

The spelling of 90918292020 in words is "ninety billion, nine hundred eighteen million, two hundred ninety-two thousand, twenty".