12156672205715 has 16 divisors (see below), whose sum is σ = 14617430227008. Its totient is φ = 9705723163776.

The previous prime is 12156672205679. The next prime is 12156672205721. The reversal of 12156672205715 is 51750227665121.

It is a cyclic number.

It is not a de Polignac number, because 12156672205715 - 2³⁶ = 12087952728979 is a prime.

It is a super-2 number, since 2×12156672205715² (a number of 27 digits) contains 22 as substring.

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, 162665537 + ... + 162740253.

It is an arithmetic number, because the mean of its divisors is an integer number (913589389188).

Almost surely, 2^{12156672205715} is an apocalyptic number.

12156672205715 is a deficient number, since it is larger than the sum of its proper divisors (2460758021293).

12156672205715 is an equidigital number, since it uses as much as digits as its factorization.

12156672205715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139918.

The product of its (nonzero) digits is 1764000, while the sum is 50.

The spelling of 12156672205715 in words is "twelve trillion, one hundred fifty-six billion, six hundred seventy-two million, two hundred five thousand, seven hundred fifteen".