12939274002406 has 4 divisors (see below), whose sum is σ = 19408911003612. Its totient is φ = 6469637001202.

The previous prime is 12939274002373. The next prime is 12939274002409. The reversal of 12939274002406 is 60420047293921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 12939274002406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12939274002409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3234818500600 + ... + 3234818500603.

It is an arithmetic number, because the mean of its divisors is an integer number (4852227750903).

Almost surely, 2^{12939274002406} is an apocalyptic number.

12939274002406 is a deficient number, since it is larger than the sum of its proper divisors (6469637001206).

12939274002406 is an equidigital number, since it uses as much as digits as its factorization.

12939274002406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6469637001205.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 12939274002406 in words is "twelve trillion, nine hundred thirty-nine billion, two hundred seventy-four million, two thousand, four hundred six".