12172566761315 has 16 divisors (see below), whose sum is σ = 14755302576000. Its totient is φ = 9639684554112.

The previous prime is 12172566761287. The next prime is 12172566761321. The reversal of 12172566761315 is 51316766527121.

It is a cyclic number.

It is not a de Polignac number, because 12172566761315 - 2²⁰ = 12172565712739 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 27663995 + ... + 28100564.

It is an arithmetic number, because the mean of its divisors is an integer number (922206411000).

Almost surely, 2^{12172566761315} is an apocalyptic number.

12172566761315 is a deficient number, since it is larger than the sum of its proper divisors (2582735814685).

12172566761315 is a wasteful number, since it uses less digits than its factorization.

12172566761315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55765006.

The product of its digits is 3175200, while the sum is 53.

The spelling of 12172566761315 in words is "twelve trillion, one hundred seventy-two billion, five hundred sixty-six million, seven hundred sixty-one thousand, three hundred fifteen".