12154275872 has 18 divisors (see below), whose sum is σ = 23929958493. Its totient is φ = 6076826112.

The previous prime is 12154275863. The next prime is 12154275877. The reversal of 12154275872 is 27857245121.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 7660450576 + 4493825296 = 87524^2 + 67036^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=77956.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12154275877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 613904 + ... + 633392.

Almost surely, 2^12154275872 is an apocalyptic number.

It is an amenable number.

12154275872 is a deficient number, since it is larger than the sum of its proper divisors (11775682621).

12154275872 is an frugal number, since it uses more digits than its factorization.

12154275872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38988 (or 19491 counting only the distinct ones).

The product of its digits is 313600, while the sum is 44.

The spelling of 12154275872 in words is "twelve billion, one hundred fifty-four million, two hundred seventy-five thousand, eight hundred seventy-two".