90211623372 has 96 divisors (see below), whose sum is σ = 253363947200. Its totient is φ = 27757349568.

The previous prime is 90211623367. The next prime is 90211623389. The reversal of 90211623372 is 27332611209.

90211623372 is a `hidden beast` number, since 9 + 0 + 21 + 1 + 623 + 3 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47178 + ... + 427374.

Almost surely, 2^90211623372 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90211623372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126681973600).

90211623372 is an abundant number, since it is smaller than the sum of its proper divisors (163152323828).

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

90211623372 is a wasteful number, since it uses less digits than its factorization.

90211623372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380249 (or 380215 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The spelling of 90211623372 in words is "ninety billion, two hundred eleven million, six hundred twenty-three thousand, three hundred seventy-two".