872117574128 has 40 divisors (see below), whose sum is σ = 1702064238000. Its totient is φ = 432875856384.

The previous prime is 872117574089. The next prime is 872117574197. The reversal of 872117574128 is 821475711278.

It is a self number, because there is not a number n which added to its sum of digits gives 872117574128.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32343500 + ... + 32370452.

It is an arithmetic number, because the mean of its divisors is an integer number (42551605950).

Almost surely, 2^872117574128 is an apocalyptic number.

It is an amenable number.

872117574128 is a deficient number, since it is larger than the sum of its proper divisors (829946663872).

872117574128 is a wasteful number, since it uses less digits than its factorization.

872117574128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41649 (or 41643 counting only the distinct ones).

The product of its digits is 1756160, while the sum is 53.

The spelling of 872117574128 in words is "eight hundred seventy-two billion, one hundred seventeen million, five hundred seventy-four thousand, one hundred twenty-eight".