156201556510220 has 48 divisors (see below), whose sum is σ = 353270411110848. Its totient is φ = 57672039916800.

The previous prime is 156201556510189. The next prime is 156201556510229. The reversal of 156201556510220 is 22015655102651.

It is not an unprimeable number, because it can be changed into a prime (156201556510229) 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, 6084431 + ... + 18692870.

It is an arithmetic number, because the mean of its divisors is an integer number (7359800231476).

Almost surely, 2^{156201556510220} is an apocalyptic number.

156201556510220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156201556510220 is an abundant number, since it is smaller than the sum of its proper divisors (197068854600628).

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

156201556510220 is a wasteful number, since it uses less digits than its factorization.

156201556510220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24801570 (or 24801568 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 41.

The spelling of 156201556510220 in words is "one hundred fifty-six trillion, two hundred one billion, five hundred fifty-six million, five hundred ten thousand, two hundred twenty".