23172518880 has 672 divisors, whose sum is σ = 95071693248. Its totient is φ = 5225472000.

The previous prime is 23172518843. The next prime is 23172518893. The reversal of 23172518880 is 8881527132.

23172518880 is a `hidden beast` number, since 2 + 317 + 251 + 8 + 8 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 82464340 + ... + 82464620.

It is an arithmetic number, because the mean of its divisors is an integer number (141475734).

Almost surely, 2^23172518880 is an apocalyptic number.

23172518880 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 23172518880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47535846624).

23172518880 is an abundant number, since it is smaller than the sum of its proper divisors (71899174368).

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

23172518880 is a wasteful number, since it uses less digits than its factorization.

23172518880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The spelling of 23172518880 in words is "twenty-three billion, one hundred seventy-two million, five hundred eighteen thousand, eight hundred eighty".