23564025720 has 384 divisors, whose sum is σ = 87678676800. Its totient is φ = 5450416128.

The previous prime is 23564025707. The next prime is 23564025733. The reversal of 23564025720 is 2752046532.

23564025720 is a `hidden beast` number, since 2 + 3 + 5 + 640 + 2 + 5 + 7 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (23564025707) and next prime (23564025733).

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 polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4299622 + ... + 4305098.

Almost surely, 2^23564025720 is an apocalyptic number.

23564025720 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 23564025720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43839338400).

23564025720 is an abundant number, since it is smaller than the sum of its proper divisors (64114651080).

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

23564025720 is a wasteful number, since it uses less digits than its factorization.

23564025720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5567 (or 5560 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 36.

The spelling of 23564025720 in words is "twenty-three billion, five hundred sixty-four million, twenty-five thousand, seven hundred twenty".