12172571055065 has 32 divisors (see below), whose sum is σ = 15362129260800. Its totient is φ = 9245938302720.

The previous prime is 12172571055059. The next prime is 12172571055079. The reversal of 12172571055065 is 56055017527121.

It is not a de Polignac number, because 12172571055065 - 2²⁰ = 12172570006489 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37722476 + ... + 38043794.

It is an arithmetic number, because the mean of its divisors is an integer number (480066539400).

Almost surely, 2^{12172571055065} is an apocalyptic number.

It is an amenable number.

12172571055065 is a deficient number, since it is larger than the sum of its proper divisors (3189558205735).

12172571055065 is a wasteful number, since it uses less digits than its factorization.

12172571055065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325697.

The product of its (nonzero) digits is 735000, while the sum is 47.

The spelling of 12172571055065 in words is "twelve trillion, one hundred seventy-two billion, five hundred seventy-one million, fifty-five thousand, sixty-five".