88991121392 has 10 divisors (see below), whose sum is σ = 172420297728. Its totient is φ = 44495560688.

The previous prime is 88991121371. The next prime is 88991121397. The reversal of 88991121392 is 29312119988.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88991121397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2780972528 + ... + 2780972559.

Almost surely, 2^88991121392 is an apocalyptic number.

It is an amenable number.

88991121392 is a deficient number, since it is larger than the sum of its proper divisors (83429176336).

88991121392 is a wasteful number, since it uses less digits than its factorization.

88991121392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5561945095 (or 5561945089 counting only the distinct ones).

The product of its digits is 559872, while the sum is 53.

The spelling of 88991121392 in words is "eighty-eight billion, nine hundred ninety-one million, one hundred twenty-one thousand, three hundred ninety-two".