12115265156 has 24 divisors (see below), whose sum is σ = 21938719320. Its totient is φ = 5847172352.

The previous prime is 12115265147. The next prime is 12115265167. The reversal of 12115265156 is 65156251121.

It can be written as a sum of positive squares in 4 ways, for example, as 2831942656 + 9283322500 = 53216^2 + 96350^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 498176 + ... + 521928.

It is an arithmetic number, because the mean of its divisors is an integer number (914113305).

Almost surely, 2^12115265156 is an apocalyptic number.

It is an amenable number.

12115265156 is a deficient number, since it is larger than the sum of its proper divisors (9823454164).

12115265156 is a wasteful number, since it uses less digits than its factorization.

12115265156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28183 (or 28181 counting only the distinct ones).

The product of its digits is 18000, while the sum is 35.

The spelling of 12115265156 in words is "twelve billion, one hundred fifteen million, two hundred sixty-five thousand, one hundred fifty-six".