180015015156 has 12 divisors (see below), whose sum is σ = 420035035392. Its totient is φ = 60005005048.

The previous prime is 180015015127. The next prime is 180015015161. The reversal of 180015015156 is 651510510081.

180015015156 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×180015015156² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7500625620 + ... + 7500625643.

It is an arithmetic number, because the mean of its divisors is an integer number (35002919616).

Almost surely, 2^180015015156 is an apocalyptic number.

It is an amenable number.

180015015156 is an abundant number, since it is smaller than the sum of its proper divisors (240020020236).

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

180015015156 is a wasteful number, since it uses less digits than its factorization.

180015015156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15001251270 (or 15001251268 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 33.

The spelling of 180015015156 in words is "one hundred eighty billion, fifteen million, fifteen thousand, one hundred fifty-six".