12256165454665 has 16 divisors (see below), whose sum is σ = 16347159965376. Its totient is φ = 8745394216000.

The previous prime is 12256165454639. The next prime is 12256165454777. The reversal of 12256165454665 is 56645456165221.

It is not a de Polignac number, because 12256165454665 - 2¹⁵ = 12256165421897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2102255311 + ... + 2102261140.

It is an arithmetic number, because the mean of its divisors is an integer number (1021697497836).

Almost surely, 2^{12256165454665} is an apocalyptic number.

It is an amenable number.

12256165454665 is a deficient number, since it is larger than the sum of its proper divisors (4090994510711).

12256165454665 is a wasteful number, since it uses less digits than its factorization.

12256165454665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4204516520.

The product of its digits is 51840000, while the sum is 58.

The spelling of 12256165454665 in words is "twelve trillion, two hundred fifty-six billion, one hundred sixty-five million, four hundred fifty-four thousand, six hundred sixty-five".