90891234532 has 24 divisors (see below), whose sum is σ = 182536766720. Its totient is φ = 38791751040.

The previous prime is 90891234523. The next prime is 90891234557. The reversal of 90891234532 is 23543219809.

It is a super-2 number, since 2×90891234532² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6727932 + ... + 6741427.

Almost surely, 2^90891234532 is an apocalyptic number.

It is an amenable number.

90891234532 is an abundant number, since it is smaller than the sum of its proper divisors (91645532188).

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

90891234532 is a wasteful number, since it uses less digits than its factorization.

90891234532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13469611 (or 13469609 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 90891234532 in words is "ninety billion, eight hundred ninety-one million, two hundred thirty-four thousand, five hundred thirty-two".