22045355261 has 4 divisors (see below), whose sum is σ = 23003848992. Its totient is φ = 21086861532.

The previous prime is 22045355257. The next prime is 22045355279. The reversal of 22045355261 is 16255354022.

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 not a de Polignac number, because 22045355261 - 2² = 22045355257 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 (22045355291) 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, 479246831 + ... + 479246876.

It is an arithmetic number, because the mean of its divisors is an integer number (5750962248).

Almost surely, 2^22045355261 is an apocalyptic number.

It is an amenable number.

22045355261 is a deficient number, since it is larger than the sum of its proper divisors (958493731).

22045355261 is an equidigital number, since it uses as much as digits as its factorization.

22045355261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958493730.

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 22045355261 in words is "twenty-two billion, forty-five million, three hundred fifty-five thousand, two hundred sixty-one".