12365345061637 has 4 divisors (see below), whose sum is σ = 13016152696480. Its totient is φ = 11714537426796.

The previous prime is 12365345061577. The next prime is 12365345061701. The reversal of 12365345061637 is 73616054356321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12365345061637 - 2²³ = 12365336673029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12365345064637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325403817393 + ... + 325403817430.

It is an arithmetic number, because the mean of its divisors is an integer number (3254038174120).

Almost surely, 2^{12365345061637} is an apocalyptic number.

It is an amenable number.

12365345061637 is a deficient number, since it is larger than the sum of its proper divisors (650807634843).

12365345061637 is an equidigital number, since it uses as much as digits as its factorization.

12365345061637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650807634842.

The product of its (nonzero) digits is 8164800, while the sum is 52.

The spelling of 12365345061637 in words is "twelve trillion, three hundred sixty-five billion, three hundred forty-five million, sixty-one thousand, six hundred thirty-seven".