156556422220 has 48 divisors (see below), whose sum is σ = 358717530528. Its totient is φ = 56919925760.

The previous prime is 156556422203. The next prime is 156556422223. The reversal of 156556422220 is 22224655651.

156556422220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (156556422223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1305924 + ... + 1420756.

It is an arithmetic number, because the mean of its divisors is an integer number (7473281886).

Almost surely, 2^156556422220 is an apocalyptic number.

156556422220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156556422220 is an abundant number, since it is smaller than the sum of its proper divisors (202161108308).

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

156556422220 is a wasteful number, since it uses less digits than its factorization.

156556422220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121050 (or 121048 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 156556422220 in words is "one hundred fifty-six billion, five hundred fifty-six million, four hundred twenty-two thousand, two hundred twenty".