872089781256 has 64 divisors (see below), whose sum is σ = 2487943843200. Its totient is φ = 282839926464.

The previous prime is 872089781177. The next prime is 872089781309. The reversal of 872089781256 is 652187980278.

It is a super-2 number, since 2×872089781256² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 872089781193 and 872089781202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54552180 + ... + 54568163.

It is an arithmetic number, because the mean of its divisors is an integer number (38874122550).

Almost surely, 2^872089781256 is an apocalyptic number.

It is an amenable number.

872089781256 is an abundant number, since it is smaller than the sum of its proper divisors (1615854061944).

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

872089781256 is a wasteful number, since it uses less digits than its factorization.

872089781256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109120395 (or 109120385 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 63.

The spelling of 872089781256 in words is "eight hundred seventy-two billion, eighty-nine million, seven hundred eighty-one thousand, two hundred fifty-six".