22556310905 has 4 divisors (see below), whose sum is σ = 27067573092. Its totient is φ = 18045048720.

The previous prime is 22556310901. The next prime is 22556310943. The reversal of 22556310905 is 50901365522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2581859344 + 19974451561 = 50812^2 + 141331^2 .

It is not a de Polignac number, because 22556310905 - 2² = 22556310901 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22556310901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2255631086 + ... + 2255631095.

It is an arithmetic number, because the mean of its divisors is an integer number (6766893273).

Almost surely, 2^22556310905 is an apocalyptic number.

It is an amenable number.

22556310905 is a deficient number, since it is larger than the sum of its proper divisors (4511262187).

22556310905 is an equidigital number, since it uses as much as digits as its factorization.

22556310905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4511262186.

The product of its (nonzero) digits is 81000, while the sum is 38.

The spelling of 22556310905 in words is "twenty-two billion, five hundred fifty-six million, three hundred ten thousand, nine hundred five".