79998000012 has 144 divisors (see below), whose sum is σ = 237623952384. Its totient is φ = 22216032000.

The previous prime is 79998000001. The next prime is 79998000023. The reversal of 79998000012 is 21000089997.

It is an interprime number because it is at equal distance from previous prime (79998000001) and next prime (79998000023).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2785687 + ... + 2814257.

It is an arithmetic number, because the mean of its divisors is an integer number (1650166336).

Almost surely, 2^79998000012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79998000012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118811976192).

79998000012 is an abundant number, since it is smaller than the sum of its proper divisors (157625952372).

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

79998000012 is a wasteful number, since it uses less digits than its factorization.

79998000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28900 (or 28895 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The spelling of 79998000012 in words is "seventy-nine billion, nine hundred ninety-eight million, twelve", and thus it is an aban number.