22503134464 has 72 divisors (see below), whose sum is σ = 47625036480. Its totient is φ = 10575372288.

The previous prime is 22503134461. The next prime is 22503134569. The reversal of 22503134464 is 46443130522.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22503134461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3648247 + ... + 3654409.

It is an arithmetic number, because the mean of its divisors is an integer number (661458840).

Almost surely, 2^22503134464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22503134464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23812518240).

22503134464 is an abundant number, since it is smaller than the sum of its proper divisors (25121902016).

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

22503134464 is an equidigital number, since it uses as much as digits as its factorization.

22503134464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7035 (or 7021 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 22503134464 its reverse (46443130522), we get a palindrome (68946264986).

The spelling of 22503134464 in words is "twenty-two billion, five hundred three million, one hundred thirty-four thousand, four hundred sixty-four".