870785431092 has 36 divisors (see below), whose sum is σ = 2211022719360. Its totient is φ = 288960185232.

The previous prime is 870785431079. The next prime is 870785431133. The reversal of 870785431092 is 290134587078.

It is a happy number.

870785431092 is a `hidden beast` number, since 8 + 7 + 0 + 7 + 8 + 543 + 1 + 0 + 92 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54226242 + ... + 54242297.

It is an arithmetic number, because the mean of its divisors is an integer number (61417297760).

Almost surely, 2^870785431092 is an apocalyptic number.

It is an amenable number.

870785431092 is an abundant number, since it is smaller than the sum of its proper divisors (1340237288268).

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

870785431092 is a wasteful number, since it uses less digits than its factorization.

870785431092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108468772 (or 108468767 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The spelling of 870785431092 in words is "eight hundred seventy billion, seven hundred eighty-five million, four hundred thirty-one thousand, ninety-two".