12616131394 has 4 divisors (see below), whose sum is σ = 18924197094. Its totient is φ = 6308065696.

The previous prime is 12616131379. The next prime is 12616131401. The reversal of 12616131394 is 49313161621.

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., 7398236169 + 5217895225 = 86013^2 + 72235^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3154032847 + ... + 3154032850.

Almost surely, 2^12616131394 is an apocalyptic number.

12616131394 is a deficient number, since it is larger than the sum of its proper divisors (6308065700).

12616131394 is an equidigital number, since it uses as much as digits as its factorization.

12616131394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6308065699.

The product of its digits is 23328, while the sum is 37.

The spelling of 12616131394 in words is "twelve billion, six hundred sixteen million, one hundred thirty-one thousand, three hundred ninety-four".