12347746457 has 4 divisors (see below), whose sum is σ = 12363240036. Its totient is φ = 12332252880.

The previous prime is 12347746447. The next prime is 12347746487. The reversal of 12347746457 is 75464774321.

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 6953725321 + 5394021136 = 83389^2 + 73444^2 .

It is a cyclic number.

It is not a de Polignac number, because 12347746457 - 2²⁸ = 12079311001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12347746447) 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, 7745594 + ... + 7747187.

It is an arithmetic number, because the mean of its divisors is an integer number (3090810009).

Almost surely, 2^12347746457 is an apocalyptic number.

It is an amenable number.

12347746457 is a deficient number, since it is larger than the sum of its proper divisors (15493579).

12347746457 is an equidigital number, since it uses as much as digits as its factorization.

12347746457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15493578.

The product of its digits is 3951360, while the sum is 50.

The spelling of 12347746457 in words is "twelve billion, three hundred forty-seven million, seven hundred forty-six thousand, four hundred fifty-seven".