180868741883721 has 48 divisors (see below), whose sum is σ = 262373457216000. Its totient is φ = 120063779176320.

The previous prime is 180868741883651. The next prime is 180868741883729. The reversal of 180868741883721 is 127388147868081.

180868741883721 is a `hidden beast` number, since 1 + 8 + 0 + 8 + 6 + 8 + 74 + 188 + 372 + 1 = 666.

It is not a de Polignac number, because 180868741883721 - 2²⁶ = 180868674774857 is a prime.

It is a super-2 number, since 2×180868741883721² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 180868741883721.

It is not an unprimeable number, because it can be changed into a prime (180868741883729) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11361807600 + ... + 11361823518.

It is an arithmetic number, because the mean of its divisors is an integer number (5466113692000).

Almost surely, 2^{180868741883721} is an apocalyptic number.

It is an amenable number.

180868741883721 is a deficient number, since it is larger than the sum of its proper divisors (81504715332279).

180868741883721 is a wasteful number, since it uses less digits than its factorization.

180868741883721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20294 (or 20291 counting only the distinct ones).

The product of its (nonzero) digits is 231211008, while the sum is 72.

The spelling of 180868741883721 in words is "one hundred eighty trillion, eight hundred sixty-eight billion, seven hundred forty-one million, eight hundred eighty-three thousand, seven hundred twenty-one".