12365640514718 has 16 divisors (see below), whose sum is σ = 18996140186496. Its totient is φ = 6033841056600.

The previous prime is 12365640514699. The next prime is 12365640514831. The reversal of 12365640514718 is 81741504656321.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12365640514718.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61717058 + ... + 61917093.

It is an arithmetic number, because the mean of its divisors is an integer number (1187258761656).

Almost surely, 2^{12365640514718} is an apocalyptic number.

12365640514718 is a deficient number, since it is larger than the sum of its proper divisors (6630499671778).

12365640514718 is a wasteful number, since it uses less digits than its factorization.

12365640514718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123635359.

The product of its (nonzero) digits is 4838400, while the sum is 53.

The spelling of 12365640514718 in words is "twelve trillion, three hundred sixty-five billion, six hundred forty million, five hundred fourteen thousand, seven hundred eighteen".