79999900002 has 48 divisors (see below), whose sum is σ = 189440447040. Its totient is φ = 24197551200.

The previous prime is 79999899979. The next prime is 79999900003. The reversal of 79999900002 is 20000999997.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (79999900003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 266302 + ... + 480537.

It is an arithmetic number, because the mean of its divisors is an integer number (3946675980).

Almost surely, 2^79999900002 is an apocalyptic number.

79999900002 is an abundant number, since it is smaller than the sum of its proper divisors (109440547038).

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

79999900002 is a wasteful number, since it uses less digits than its factorization.

79999900002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747399 (or 747396 counting only the distinct ones).

The product of its (nonzero) digits is 826686, while the sum is 54.

The spelling of 79999900002 in words is "seventy-nine billion, nine hundred ninety-nine million, nine hundred thousand, two".