22015090855 has 4 divisors (see below), whose sum is σ = 26418109032. Its totient is φ = 17612072680.

The previous prime is 22015090843. The next prime is 22015090859. The reversal of 22015090855 is 55809051022.

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

It is not a de Polignac number, because 22015090855 - 2²¹ = 22012993703 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 (22015090859) 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, 2201509081 + ... + 2201509090.

It is an arithmetic number, because the mean of its divisors is an integer number (6604527258).

Almost surely, 2^22015090855 is an apocalyptic number.

22015090855 is a deficient number, since it is larger than the sum of its proper divisors (4403018177).

22015090855 is an equidigital number, since it uses as much as digits as its factorization.

22015090855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4403018176.

The product of its (nonzero) digits is 36000, while the sum is 37.

The spelling of 22015090855 in words is "twenty-two billion, fifteen million, ninety thousand, eight hundred fifty-five".