23445738720 has 144 divisors (see below), whose sum is σ = 80307339840. Its totient is φ = 6228851712.

The previous prime is 23445738713. The next prime is 23445738739. The reversal of 23445738720 is 2783754432.

23445738720 is a `hidden beast` number, since 2 + 3 + 4 + 4 + 573 + 8 + 72 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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 23 ways as a sum of consecutive naturals, for example, 357097 + ... + 417623.

It is an arithmetic number, because the mean of its divisors is an integer number (557689860).

Almost surely, 2^23445738720 is an apocalyptic number.

23445738720 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 23445738720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40153669920).

23445738720 is an abundant number, since it is smaller than the sum of its proper divisors (56861601120).

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

23445738720 is a wasteful number, since it uses less digits than its factorization.

23445738720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60817 (or 60806 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 45.

The spelling of 23445738720 in words is "twenty-three billion, four hundred forty-five million, seven hundred thirty-eight thousand, seven hundred twenty".