985811925672 has 72 divisors (see below), whose sum is σ = 3105810542250. Its totient is φ = 281660549184.

The previous prime is 985811925661. The next prime is 985811925773. The reversal of 985811925672 is 276529118589.

985811925672 is a `hidden beast` number, since 9 + 8 + 58 + 1 + 19 + 2 + 567 + 2 = 666.

985811925672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 904412412036 + 81399513636 = 951006^2 + 285306^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 139709047 + ... + 139716102.

Almost surely, 2^985811925672 is an apocalyptic number.

It is an amenable number.

985811925672 is an abundant number, since it is smaller than the sum of its proper divisors (2119998616578).

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

985811925672 is a wasteful number, since it uses less digits than its factorization.

985811925672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279425175 (or 279425161 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 63.

The spelling of 985811925672 in words is "nine hundred eighty-five billion, eight hundred eleven million, nine hundred twenty-five thousand, six hundred seventy-two".