12137721044765 has 8 divisors (see below), whose sum is σ = 14670051335520. Its totient is φ = 9640319447952.

The previous prime is 12137721044753. The next prime is 12137721044819. The reversal of 12137721044765 is 56744012773121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12137721044765 - 2⁸ = 12137721044509 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8732172719 + ... + 8732174108.

It is an arithmetic number, because the mean of its divisors is an integer number (1833756416940).

Almost surely, 2^{12137721044765} is an apocalyptic number.

It is an amenable number.

12137721044765 is a deficient number, since it is larger than the sum of its proper divisors (2532330290755).

12137721044765 is a wasteful number, since it uses less digits than its factorization.

12137721044765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17464346971.

The product of its (nonzero) digits is 1975680, while the sum is 50.

The spelling of 12137721044765 in words is "twelve trillion, one hundred thirty-seven billion, seven hundred twenty-one million, forty-four thousand, seven hundred sixty-five".