23723172180 has 144 divisors (see below), whose sum is σ = 75166116480. Its totient is φ = 6048596736.

The previous prime is 23723172173. The next prime is 23723172241. The reversal of 23723172180 is 8127132732.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 515599 + ... + 559721.

It is an arithmetic number, because the mean of its divisors is an integer number (521986920).

Almost surely, 2^23723172180 is an apocalyptic number.

23723172180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23723172180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37583058240).

23723172180 is an abundant number, since it is smaller than the sum of its proper divisors (51442944300).

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

23723172180 is a wasteful number, since it uses less digits than its factorization.

23723172180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44270 (or 44265 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The spelling of 23723172180 in words is "twenty-three billion, seven hundred twenty-three million, one hundred seventy-two thousand, one hundred eighty".