23541553000 has 128 divisors (see below), whose sum is σ = 63382176000. Its totient is φ = 8016864000.

The previous prime is 23541552997. The next prime is 23541553019. The reversal of 23541553000 is 35514532.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 23541553000.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1031715 + ... + 1054285.

It is an arithmetic number, because the mean of its divisors is an integer number (495173250).

Almost surely, 2^23541553000 is an apocalyptic number.

23541553000 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 23541553000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31691088000).

23541553000 is an abundant number, since it is smaller than the sum of its proper divisors (39840623000).

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

23541553000 is a wasteful number, since it uses less digits than its factorization.

23541553000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22748 (or 22734 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The spelling of 23541553000 in words is "twenty-three billion, five hundred forty-one million, five hundred fifty-three thousand".