22503645580 has 96 divisors (see below), whose sum is σ = 51609700800. Its totient is φ = 8192421888.

The previous prime is 22503645557. The next prime is 22503645583. The reversal of 22503645580 is 8554630522.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22503645583) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17457576 + ... + 17458864.

It is an arithmetic number, because the mean of its divisors is an integer number (537601050).

Almost surely, 2^22503645580 is an apocalyptic number.

22503645580 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 22503645580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25804850400).

22503645580 is an abundant number, since it is smaller than the sum of its proper divisors (29106055220).

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

22503645580 is a wasteful number, since it uses less digits than its factorization.

22503645580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2203 (or 2201 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 22503645580 in words is "twenty-two billion, five hundred three million, six hundred forty-five thousand, five hundred eighty".