156542565652320 has 48 divisors (see below), whose sum is σ = 493109081806320. Its totient is φ = 41744684173824.

The previous prime is 156542565652243. The next prime is 156542565652321. The reversal of 156542565652320 is 23256565245651.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×156542565652320² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156542565652321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163065172075 + ... + 163065173034.

It is an arithmetic number, because the mean of its divisors is an integer number (10273105870965).

Almost surely, 2^{156542565652320} is an apocalyptic number.

156542565652320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156542565652320 is an abundant number, since it is smaller than the sum of its proper divisors (336566516154000).

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

156542565652320 is a wasteful number, since it uses less digits than its factorization.

156542565652320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326130345127 (or 326130345119 counting only the distinct ones).

The product of its (nonzero) digits is 64800000, while the sum is 57.

The spelling of 156542565652320 in words is "one hundred fifty-six trillion, five hundred forty-two billion, five hundred sixty-five million, six hundred fifty-two thousand, three hundred twenty".