23122540000 has 120 divisors (see below), whose sum is σ = 65011727088. Its totient is φ = 7927680000.

The previous prime is 23122539971. The next prime is 23122540003. The reversal of 23122540000 is 4522132.

It is a self number, because there is not a number n which added to its sum of digits gives 23122540000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23122540003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 57420 + ... + 222580.

Almost surely, 2^23122540000 is an apocalyptic number.

23122540000 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 23122540000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32505863544).

23122540000 is an abundant number, since it is smaller than the sum of its proper divisors (41889187088).

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

23122540000 is an equidigital number, since it uses as much as digits as its factorization.

23122540000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165198 (or 165175 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The spelling of 23122540000 in words is "twenty-three billion, one hundred twenty-two million, five hundred forty thousand".