90321876988 has 36 divisors (see below), whose sum is σ = 186883814712. Its totient is φ = 38074790880.

The previous prime is 90321876977. The next prime is 90321877001. The reversal of 90321876988 is 88967812309.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3765306 + ... + 3789217.

Almost surely, 2^90321876988 is an apocalyptic number.

90321876988 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

90321876988 is an abundant number, since it is smaller than the sum of its proper divisors (96561937724).

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

90321876988 is a wasteful number, since it uses less digits than its factorization.

90321876988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7554602 (or 7554593 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 61.

The spelling of 90321876988 in words is "ninety billion, three hundred twenty-one million, eight hundred seventy-six thousand, nine hundred eighty-eight".