23121360180 has 72 divisors (see below), whose sum is σ = 70168427784. Its totient is φ = 6162739200.

The previous prime is 23121360179. The next prime is 23121360181. The reversal of 23121360180 is 8106312132.

It is a happy number.

23121360180 is a `hidden beast` number, since 2 + 3 + 121 + 360 + 180 = 666.

It is an interprime number because it is at equal distance from previous prime (23121360179) and next prime (23121360181).

It can be written as a sum of positive squares in 4 ways, for example, as 460875024 + 22660485156 = 21468^2 + 150534^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23121360181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 359260 + ... + 418700.

It is an arithmetic number, because the mean of its divisors is an integer number (974561497).

Almost surely, 2^23121360180 is an apocalyptic number.

23121360180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23121360180 is an abundant number, since it is smaller than the sum of its proper divisors (47047067604).

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

23121360180 is a wasteful number, since it uses less digits than its factorization.

23121360180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61617 (or 61612 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 23121360180 in words is "twenty-three billion, one hundred twenty-one million, three hundred sixty thousand, one hundred eighty".