99678692799 has 16 divisors (see below), whose sum is σ = 168768157440. Its totient is φ = 56959252920.

The previous prime is 99678692783. The next prime is 99678692801. The reversal of 99678692799 is 99729687699.

It is not a de Polignac number, because 99678692799 - 2⁴ = 99678692783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99678692999) 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, 263700057 + ... + 263700434.

It is an arithmetic number, because the mean of its divisors is an integer number (10548009840).

Almost surely, 2^99678692799 is an apocalyptic number.

99678692799 is a deficient number, since it is larger than the sum of its proper divisors (69089464641).

99678692799 is a wasteful number, since it uses less digits than its factorization.

99678692799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527400507 (or 527400501 counting only the distinct ones).

The product of its digits is 1666598976, while the sum is 81.

The spelling of 99678692799 in words is "ninety-nine billion, six hundred seventy-eight million, six hundred ninety-two thousand, seven hundred ninety-nine".