87192775422 has 24 divisors (see below), whose sum is σ = 191309046240. Its totient is φ = 28696356000.

The previous prime is 87192775399. The next prime is 87192775427. The reversal of 87192775422 is 22457729178.

87192775422 is a `hidden beast` number, since 8 + 7 + 1 + 92 + 7 + 7 + 542 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87192775427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30657079 + ... + 30659922.

It is an arithmetic number, because the mean of its divisors is an integer number (7971210260).

Almost surely, 2^87192775422 is an apocalyptic number.

87192775422 is an abundant number, since it is smaller than the sum of its proper divisors (104116270818).

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

87192775422 is a wasteful number, since it uses less digits than its factorization.

87192775422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61317088 (or 61317085 counting only the distinct ones).

The product of its digits is 3951360, while the sum is 54.

The spelling of 87192775422 in words is "eighty-seven billion, one hundred ninety-two million, seven hundred seventy-five thousand, four hundred twenty-two".