12926553903918 has 24 divisors (see below), whose sum is σ = 28007606971656. Its totient is φ = 4308839991600.

The previous prime is 12926553903859. The next prime is 12926553903997. The reversal of 12926553903918 is 81930935562921.

12926553903918 is a `hidden beast` number, since 1 + 2 + 9 + 2 + 6 + 5 + 539 + 0 + 3 + 91 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8862913 + ... + 10217843.

It is an arithmetic number, because the mean of its divisors is an integer number (1166983623819).

Almost surely, 2^{12926553903918} is an apocalyptic number.

12926553903918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12926553903918 is an abundant number, since it is smaller than the sum of its proper divisors (15081053067738).

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

12926553903918 is a wasteful number, since it uses less digits than its factorization.

12926553903918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884960 (or 1884957 counting only the distinct ones).

The product of its (nonzero) digits is 31492800, while the sum is 63.

The spelling of 12926553903918 in words is "twelve trillion, nine hundred twenty-six billion, five hundred fifty-three million, nine hundred three thousand, nine hundred eighteen".