22054620661 has 4 divisors (see below), whose sum is σ = 22054933152. Its totient is φ = 22054308172.

The previous prime is 22054620617. The next prime is 22054620683. The reversal of 22054620661 is 16602645022.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22054620661 - 2¹⁹ = 22054096373 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 (22054620961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5286 + ... + 210088.

It is an arithmetic number, because the mean of its divisors is an integer number (5513733288).

Almost surely, 2^22054620661 is an apocalyptic number.

It is an amenable number.

22054620661 is a deficient number, since it is larger than the sum of its proper divisors (312491).

22054620661 is a wasteful number, since it uses less digits than its factorization.

22054620661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312490.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 22054620661 in words is "twenty-two billion, fifty-four million, six hundred twenty thousand, six hundred sixty-one".