12156242042634 has 64 divisors (see below), whose sum is σ = 24395519001600. Its totient is φ = 4038276477312.

The previous prime is 12156242042587. The next prime is 12156242042641. The reversal of 12156242042634 is 43624024265121.

12156242042634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7981773397 + ... + 7981774919.

It is an arithmetic number, because the mean of its divisors is an integer number (381179984400).

Almost surely, 2^{12156242042634} is an apocalyptic number.

12156242042634 is an abundant number, since it is smaller than the sum of its proper divisors (12239276958966).

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

12156242042634 is a wasteful number, since it uses less digits than its factorization.

12156242042634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4859.

The product of its (nonzero) digits is 552960, while the sum is 42.

The spelling of 12156242042634 in words is "twelve trillion, one hundred fifty-six billion, two hundred forty-two million, forty-two thousand, six hundred thirty-four".