12137721044759 has 4 divisors (see below), whose sum is σ = 12137748173016. Its totient is φ = 12137693916504.

The previous prime is 12137721044753. The next prime is 12137721044819. The reversal of 12137721044759 is 95744012773121.

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

It is a cyclic number.

It is not a de Polignac number, because 12137721044759 - 2⁸ = 12137721044503 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12137721044759.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12137721044753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12881549 + ... + 13791654.

It is an arithmetic number, because the mean of its divisors is an integer number (3034437043254).

Almost surely, 2^{12137721044759} is an apocalyptic number.

12137721044759 is a deficient number, since it is larger than the sum of its proper divisors (27128257).

12137721044759 is an equidigital number, since it uses as much as digits as its factorization.

12137721044759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27128256.

The product of its (nonzero) digits is 2963520, while the sum is 53.

The spelling of 12137721044759 in words is "twelve trillion, one hundred thirty-seven billion, seven hundred twenty-one million, forty-four thousand, seven hundred fifty-nine".