12318677311408 has 80 divisors (see below), whose sum is σ = 26286397562880. Its totient is φ = 5556917000448.

The previous prime is 12318677311351. The next prime is 12318677311411. The reversal of 12318677311408 is 80411377681321.

It is a Harshad number since it is a multiple of its sum of digits (52).

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, 6240513 + ... + 7973791.

It is an arithmetic number, because the mean of its divisors is an integer number (328579969536).

Almost surely, 2^{12318677311408} 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 12318677311408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13143198781440).

12318677311408 is an abundant number, since it is smaller than the sum of its proper divisors (13967720251472).

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

12318677311408 is a wasteful number, since it uses less digits than its factorization.

12318677311408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734074 (or 1734068 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 12318677311408 in words is "twelve trillion, three hundred eighteen billion, six hundred seventy-seven million, three hundred eleven thousand, four hundred eight".