888021798972 has 72 divisors (see below), whose sum is σ = 2602906900608. Its totient is φ = 230655010080.

The previous prime is 888021798941. The next prime is 888021798991. The reversal of 888021798972 is 279897120888.

It is a junction number, because it is equal to n+sod(n) for n = 888021798897 and 888021798906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43674498 + ... + 43694825.

Almost surely, 2^888021798972 is an apocalyptic number.

It is an amenable number.

888021798972 is an abundant number, since it is smaller than the sum of its proper divisors (1714885101636).

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

888021798972 is a wasteful number, since it uses less digits than its factorization.

888021798972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87369359 (or 87369346 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 69.

The spelling of 888021798972 in words is "eight hundred eighty-eight billion, twenty-one million, seven hundred ninety-eight thousand, nine hundred seventy-two".