99207810993 has 64 divisors (see below), whose sum is σ = 139203477504. Its totient is φ = 62791200000.

The previous prime is 99207810991. The next prime is 99207811007. The reversal of 99207810993 is 39901870299.

It is not a de Polignac number, because 99207810993 - 2¹ = 99207810991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99207810991) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 395250118 + ... + 395250368.

It is an arithmetic number, because the mean of its divisors is an integer number (2175054336).

Almost surely, 2^99207810993 is an apocalyptic number.

It is an amenable number.

99207810993 is a deficient number, since it is larger than the sum of its proper divisors (39995666511).

99207810993 is a wasteful number, since it uses less digits than its factorization.

99207810993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766.

The product of its (nonzero) digits is 2204496, while the sum is 57.

The spelling of 99207810993 in words is "ninety-nine billion, two hundred seven million, eight hundred ten thousand, nine hundred ninety-three".