992188775128 has 32 divisors (see below), whose sum is σ = 1863752662800. Its totient is φ = 495188733312.

The previous prime is 992188775119. The next prime is 992188775173. The reversal of 992188775128 is 821577881299.

It is a happy number.

992188775128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12247251 + ... + 12327997.

Almost surely, 2^992188775128 is an apocalyptic number.

It is an amenable number.

992188775128 is a deficient number, since it is larger than the sum of its proper divisors (871563887672).

992188775128 is a wasteful number, since it uses less digits than its factorization.

992188775128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83539 (or 83535 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 67.

The spelling of 992188775128 in words is "nine hundred ninety-two billion, one hundred eighty-eight million, seven hundred seventy-five thousand, one hundred twenty-eight".