22453123520 has 84 divisors (see below), whose sum is σ = 54496517880. Its totient is φ = 8811439104.

The previous prime is 22453123513. The next prime is 22453123559. The reversal of 22453123520 is 2532135422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 886391 + ... + 911369.

It is an arithmetic number, because the mean of its divisors is an integer number (648768070).

Almost surely, 2^22453123520 is an apocalyptic number.

22453123520 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 22453123520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27248258940).

22453123520 is an abundant number, since it is smaller than the sum of its proper divisors (32043394360).

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

22453123520 is an equidigital number, since it uses as much as digits as its factorization.

22453123520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25102 (or 25039 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 22453123520 its reverse (2532135422), we get a palindrome (24985258942).

The spelling of 22453123520 in words is "twenty-two billion, four hundred fifty-three million, one hundred twenty-three thousand, five hundred twenty".