90495890120 has 16 divisors (see below), whose sum is σ = 203615752860. Its totient is φ = 36198356032.

The previous prime is 90495890119. The next prime is 90495890123. The reversal of 90495890120 is 2109859409.

It can be written as a sum of positive squares in 2 ways, for example, as 83212633156 + 7283256964 = 288466^2 + 85342^2 .

It is a super-2 number, since 2×90495890120² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90495890123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1131198587 + ... + 1131198666.

Almost surely, 2^90495890120 is an apocalyptic number.

It is an amenable number.

90495890120 is an abundant number, since it is smaller than the sum of its proper divisors (113119862740).

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

90495890120 is a wasteful number, since it uses less digits than its factorization.

90495890120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262397264 (or 2262397260 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 47.

The spelling of 90495890120 in words is "ninety billion, four hundred ninety-five million, eight hundred ninety thousand, one hundred twenty".