23013918720 has 768 divisors, whose sum is σ = 93012192000. Its totient is φ = 5350883328.

The previous prime is 23013918713. The next prime is 23013918727. The reversal of 23013918720 is 2781931032.

It is an interprime number because it is at equal distance from previous prime (23013918713) and next prime (23013918727).

It is a tau number, because it is divible by the number of its divisors (768).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23013918727) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 68290392 + ... + 68290728.

It is an arithmetic number, because the mean of its divisors is an integer number (121109625).

Almost surely, 2^23013918720 is an apocalyptic number.

23013918720 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 23013918720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46506096000).

23013918720 is an abundant number, since it is smaller than the sum of its proper divisors (69998273280).

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

23013918720 is a wasteful number, since it uses less digits than its factorization.

23013918720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The spelling of 23013918720 in words is "twenty-three billion, thirteen million, nine hundred eighteen thousand, seven hundred twenty".