872655945984 has 144 divisors (see below), whose sum is σ = 2629288771200. Its totient is φ = 285396793344.

The previous prime is 872655945971. The next prime is 872655946003. The reversal of 872655945984 is 489549556278.

872655945984 is a `hidden beast` number, since 8 + 7 + 26 + 5 + 5 + 9 + 4 + 598 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×872655945984² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 824724 + ... + 1557395.

It is an arithmetic number, because the mean of its divisors is an integer number (18258949800).

Almost surely, 2^872655945984 is an apocalyptic number.

It is an amenable number.

872655945984 is an abundant number, since it is smaller than the sum of its proper divisors (1756632825216).

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

872655945984 is a wasteful number, since it uses less digits than its factorization.

872655945984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382197 (or 2382177 counting only the distinct ones).

The product of its digits is 870912000, while the sum is 72.

The spelling of 872655945984 in words is "eight hundred seventy-two billion, six hundred fifty-five million, nine hundred forty-five thousand, nine hundred eighty-four".