23155533000 has 192 divisors, whose sum is σ = 79028726400. Its totient is φ = 6114614400.

The previous prime is 23155532971. The next prime is 23155533001. The reversal of 23155533000 is 33555132.

It is not an unprimeable number, because it can be changed into a prime (23155533001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 914511 + ... + 939489.

It is an arithmetic number, because the mean of its divisors is an integer number (411607950).

Almost surely, 2^23155533000 is an apocalyptic number.

23155533000 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 23155533000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39514363200).

23155533000 is an abundant number, since it is smaller than the sum of its proper divisors (55873193400).

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

23155533000 is a wasteful number, since it uses less digits than its factorization.

23155533000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25109 (or 25092 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 27.

The spelling of 23155533000 in words is "twenty-three billion, one hundred fifty-five million, five hundred thirty-three thousand".