90105598488 has 16 divisors (see below), whose sum is σ = 225263996280. Its totient is φ = 30035199488.

The previous prime is 90105598477. The next prime is 90105598577. The reversal of 90105598488 is 88489550109.

It is a super-2 number, since 2×90105598488² (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 3 ways as a sum of consecutive naturals, for example, 1877199945 + ... + 1877199992.

Almost surely, 2^90105598488 is an apocalyptic number.

It is an amenable number.

90105598488 is an abundant number, since it is smaller than the sum of its proper divisors (135158397792).

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

90105598488 is a wasteful number, since it uses less digits than its factorization.

90105598488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3754399946 (or 3754399942 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 57.

The spelling of 90105598488 in words is "ninety billion, one hundred five million, five hundred ninety-eight thousand, four hundred eighty-eight".