12399318054 has 32 divisors (see below), whose sum is σ = 27563120640. Its totient is φ = 4131743976.

The previous prime is 12399318013. The next prime is 12399318079. The reversal of 12399318054 is 45081399321.

It is a happy number.

12399318054 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134767 + ... + 207269.

It is an arithmetic number, because the mean of its divisors is an integer number (861347520).

Almost surely, 2^12399318054 is an apocalyptic number.

12399318054 is an abundant number, since it is smaller than the sum of its proper divisors (15163802586).

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

12399318054 is a wasteful number, since it uses less digits than its factorization.

12399318054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75681 (or 75675 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 12399318054 in words is "twelve billion, three hundred ninety-nine million, three hundred eighteen thousand, fifty-four".