13131873393466 has 4 divisors (see below), whose sum is σ = 19697810090202. Its totient is φ = 6565936696732.

The previous prime is 13131873393449. The next prime is 13131873393491. The reversal of 13131873393466 is 66439337813131.

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

It can be written as a sum of positive squares in only one way, i.e., 10763287755025 + 2368585638441 = 3280745^2 + 1539021^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13131873393466.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3282968348365 + ... + 3282968348368.

Almost surely, 2^{13131873393466} is an apocalyptic number.

13131873393466 is a deficient number, since it is larger than the sum of its proper divisors (6565936696736).

13131873393466 is an equidigital number, since it uses as much as digits as its factorization.

13131873393466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6565936696735.

The product of its digits is 17635968, while the sum is 58.

The spelling of 13131873393466 in words is "thirteen trillion, one hundred thirty-one billion, eight hundred seventy-three million, three hundred ninety-three thousand, four hundred sixty-six".