156221211078426 has 32 divisors (see below), whose sum is σ = 336487365607680. Its totient is φ = 48066506236224.

The previous prime is 156221211078397. The next prime is 156221211078431. The reversal of 156221211078426 is 624870112122651.

156221211078426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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, 30051186 + ... + 34864253.

It is an arithmetic number, because the mean of its divisors is an integer number (10515230175240).

Almost surely, 2^{156221211078426} is an apocalyptic number.

156221211078426 is an abundant number, since it is smaller than the sum of its proper divisors (180266154529254).

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

156221211078426 is a wasteful number, since it uses less digits than its factorization.

156221211078426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64946310.

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 156221211078426 in words is "one hundred fifty-six trillion, two hundred twenty-one billion, two hundred eleven million, seventy-eight thousand, four hundred twenty-six".