23021544000 has 896 divisors, whose sum is σ = 95432343552. Its totient is φ = 4760985600.

The previous prime is 23021543989. The next prime is 23021544001. The reversal of 23021544000 is 44512032.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (23021544001) by changing a digit.

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 127 ways as a sum of consecutive naturals, for example, 181271937 + ... + 181272063.

It is an arithmetic number, because the mean of its divisors is an integer number (106509312).

Almost surely, 2^23021544000 is an apocalyptic number.

23021544000 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 23021544000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47716171776).

23021544000 is an abundant number, since it is smaller than the sum of its proper divisors (72410799552).

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

23021544000 is a wasteful number, since it uses less digits than its factorization.

23021544000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The spelling of 23021544000 in words is "twenty-three billion, twenty-one million, five hundred forty-four thousand".