12145155156 has 36 divisors (see below), whose sum is σ = 30733384500. Its totient is φ = 4044016128.

The previous prime is 12145155149. The next prime is 12145155173. The reversal of 12145155156 is 65155154121.

12145155156 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 51 + 551 + 56 = 666.

12145155156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2427138756 + 9718016400 = 49266^2 + 98580^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12145155156.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148131 + ... + 215018.

It is an arithmetic number, because the mean of its divisors is an integer number (853705125).

Almost surely, 2^12145155156 is an apocalyptic number.

It is an amenable number.

12145155156 is an abundant number, since it is smaller than the sum of its proper divisors (18588229344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12145155156 is a wasteful number, since it uses less digits than its factorization.

12145155156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364088 (or 364083 counting only the distinct ones).

The product of its digits is 30000, while the sum is 36.

The spelling of 12145155156 in words is "twelve billion, one hundred forty-five million, one hundred fifty-five thousand, one hundred fifty-six".