22636342661 has 4 divisors (see below), whose sum is σ = 22642894092. Its totient is φ = 22629791232.

The previous prime is 22636342637. The next prime is 22636342667. The reversal of 22636342661 is 16624363622.

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 8851234561 + 13785108100 = 94081^2 + 117410^2 .

It is a cyclic number.

It is not a de Polignac number, because 22636342661 - 2¹⁸ = 22636080517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22636342667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3270530 + ... + 3277443.

It is an arithmetic number, because the mean of its divisors is an integer number (5660723523).

Almost surely, 2^22636342661 is an apocalyptic number.

It is an amenable number.

22636342661 is a deficient number, since it is larger than the sum of its proper divisors (6551431).

22636342661 is an equidigital number, since it uses as much as digits as its factorization.

22636342661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6551430.

The product of its digits is 373248, while the sum is 41.

The spelling of 22636342661 in words is "twenty-two billion, six hundred thirty-six million, three hundred forty-two thousand, six hundred sixty-one".