22645117505 has 4 divisors (see below), whose sum is σ = 27174141012. Its totient is φ = 18116094000.

The previous prime is 22645117459. The next prime is 22645117513. The reversal of 22645117505 is 50571154622.

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 14200058896 + 8445058609 = 119164^2 + 91897^2 .

It is not a de Polignac number, because 22645117505 - 2²⁴ = 22628340289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2264511746 + ... + 2264511755.

It is an arithmetic number, because the mean of its divisors is an integer number (6793535253).

Almost surely, 2^22645117505 is an apocalyptic number.

It is an amenable number.

22645117505 is a deficient number, since it is larger than the sum of its proper divisors (4529023507).

22645117505 is an equidigital number, since it uses as much as digits as its factorization.

22645117505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4529023506.

The product of its (nonzero) digits is 84000, while the sum is 38.

The spelling of 22645117505 in words is "twenty-two billion, six hundred forty-five million, one hundred seventeen thousand, five hundred five".