22553320405 has 24 divisors (see below), whose sum is σ = 34344652320. Its totient is φ = 14059211040.

The previous prime is 22553320393. The next prime is 22553320409. The reversal of 22553320405 is 50402335522.

It is not a de Polignac number, because 22553320405 - 2⁵ = 22553320373 is a prime.

It is a super-2 number, since 2×22553320405² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22553320409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4181595 + ... + 4186984.

It is an arithmetic number, because the mean of its divisors is an integer number (1431027180).

Almost surely, 2^22553320405 is an apocalyptic number.

It is an amenable number.

22553320405 is a deficient number, since it is larger than the sum of its proper divisors (11791331915).

22553320405 is a wasteful number, since it uses less digits than its factorization.

22553320405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8368609 (or 8368602 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 31.

Adding to 22553320405 its reverse (50402335522), we get a palindrome (72955655927).

The spelling of 22553320405 in words is "twenty-two billion, five hundred fifty-three million, three hundred twenty thousand, four hundred five".