99691158807 has 40 divisors (see below), whose sum is σ = 155505297024. Its totient is φ = 63526546512.

The previous prime is 99691158799. The next prime is 99691158851. The reversal of 99691158807 is 70885119699.

It is not a de Polignac number, because 99691158807 - 2³ = 99691158799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99691158407) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2744788 + ... + 2780870.

Almost surely, 2^99691158807 is an apocalyptic number.

99691158807 is a deficient number, since it is larger than the sum of its proper divisors (55814138217).

99691158807 is a wasteful number, since it uses less digits than its factorization.

99691158807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37601 (or 37592 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 63.

The spelling of 99691158807 in words is "ninety-nine billion, six hundred ninety-one million, one hundred fifty-eight thousand, eight hundred seven".