99977406186732 has 24 divisors (see below), whose sum is σ = 234711783854016. Its totient is φ = 33121349288208.

The previous prime is 99977406186689. The next prime is 99977406186743. The reversal of 99977406186732 is 23768160477999.

It is a happy 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, 25556594718 + ... + 25556598629.

It is an arithmetic number, because the mean of its divisors is an integer number (9779657660584).

Almost surely, 2^{99977406186732} is an apocalyptic number.

It is an amenable number.

99977406186732 is an abundant number, since it is smaller than the sum of its proper divisors (134734377667284).

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

99977406186732 is a wasteful number, since it uses less digits than its factorization.

99977406186732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51113193517 (or 51113193515 counting only the distinct ones).

The product of its (nonzero) digits is 1728324864, while the sum is 78.

The spelling of 99977406186732 in words is "ninety-nine trillion, nine hundred seventy-seven billion, four hundred six million, one hundred eighty-six thousand, seven hundred thirty-two".