12347661365 has 12 divisors (see below), whose sum is σ = 16044654564. Its totient is φ = 9118272384.

The previous prime is 12347661331. The next prime is 12347661371. The reversal of 12347661365 is 56316674321.

It can be written as a sum of positive squares in 6 ways, for example, as 588644644 + 11759016721 = 24262^2 + 108439^2 .

It is not a de Polignac number, because 12347661365 - 2¹² = 12347657269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7305464 + ... + 7307153.

It is an arithmetic number, because the mean of its divisors is an integer number (1337054547).

Almost surely, 2^12347661365 is an apocalyptic number.

It is an amenable number.

12347661365 is a deficient number, since it is larger than the sum of its proper divisors (3696993199).

12347661365 is a wasteful number, since it uses less digits than its factorization.

12347661365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14612648 (or 14612635 counting only the distinct ones).

The product of its digits is 544320, while the sum is 44.

The spelling of 12347661365 in words is "twelve billion, three hundred forty-seven million, six hundred sixty-one thousand, three hundred sixty-five".