99839762928777 has 16 divisors (see below), whose sum is σ = 133522046752640. Its totient is φ = 66358682272512.

The previous prime is 99839762928769. The next prime is 99839762928793. The reversal of 99839762928777 is 77782926793899.

It is not a de Polignac number, because 99839762928777 - 2³ = 99839762928769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99839762928727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15720828 + ... + 21138210.

It is an arithmetic number, because the mean of its divisors is an integer number (8345127922040).

Almost surely, 2^{99839762928777} is an apocalyptic number.

It is an amenable number.

99839762928777 is a deficient number, since it is larger than the sum of its proper divisors (33682283823863).

99839762928777 is a wasteful number, since it uses less digits than its factorization.

99839762928777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5435952.

The product of its digits is 72589644288, while the sum is 93.

The spelling of 99839762928777 in words is "ninety-nine trillion, eight hundred thirty-nine billion, seven hundred sixty-two million, nine hundred twenty-eight thousand, seven hundred seventy-seven".