12939187791794 has 32 divisors (see below), whose sum is σ = 21862710853632. Its totient is φ = 5690035386000.

The previous prime is 12939187791793. The next prime is 12939187791847. The reversal of 12939187791794 is 49719778193921.

12939187791794 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12939187791794² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12939187791793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 515042 + ... + 5113085.

It is an arithmetic number, because the mean of its divisors is an integer number (683209714176).

Almost surely, 2^{12939187791794} is an apocalyptic number.

12939187791794 is a deficient number, since it is larger than the sum of its proper divisors (8923523061838).

12939187791794 is a wasteful number, since it uses less digits than its factorization.

12939187791794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5631542.

The product of its digits is 432081216, while the sum is 77.

The spelling of 12939187791794 in words is "twelve trillion, nine hundred thirty-nine billion, one hundred eighty-seven million, seven hundred ninety-one thousand, seven hundred ninety-four".