22540234453 has 4 divisors (see below), whose sum is σ = 24589346688. Its totient is φ = 20491122220.

The previous prime is 22540234441. The next prime is 22540234477. The reversal of 22540234453 is 35443204522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22540234453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22540234433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1024556101 + ... + 1024556122.

It is an arithmetic number, because the mean of its divisors is an integer number (6147336672).

Almost surely, 2^22540234453 is an apocalyptic number.

It is an amenable number.

22540234453 is a deficient number, since it is larger than the sum of its proper divisors (2049112235).

22540234453 is a wasteful number, since it uses less digits than its factorization.

22540234453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049112234.

The product of its (nonzero) digits is 115200, while the sum is 34.

Adding to 22540234453 its reverse (35443204522), we get a palindrome (57983438975).

The spelling of 22540234453 in words is "twenty-two billion, five hundred forty million, two hundred thirty-four thousand, four hundred fifty-three".