12347791469137 has 4 divisors (see below), whose sum is σ = 12348385447860. Its totient is φ = 12347197490416.

The previous prime is 12347791469081. The next prime is 12347791469147. The reversal of 12347791469137 is 73196419774321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6172049578321 + 6175741890816 = 2484361^2 + 2485104^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12347791469137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12347791469147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296958178 + ... + 296999755.

It is an arithmetic number, because the mean of its divisors is an integer number (3087096361965).

Almost surely, 2^{12347791469137} is an apocalyptic number.

It is an amenable number.

12347791469137 is a deficient number, since it is larger than the sum of its proper divisors (593978723).

12347791469137 is an equidigital number, since it uses as much as digits as its factorization.

12347791469137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593978722.

The product of its digits is 48009024, while the sum is 64.

The spelling of 12347791469137 in words is "twelve trillion, three hundred forty-seven billion, seven hundred ninety-one million, four hundred sixty-nine thousand, one hundred thirty-seven".