22453641665 has 36 divisors (see below), whose sum is σ = 33940012284. Its totient is φ = 14212388736.

The previous prime is 22453641643. The next prime is 22453641731. The reversal of 22453641665 is 56614635422.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 8143979536 + 14309662129 = 90244^2 + 119623^2 .

It is not a de Polignac number, because 22453641665 - 2⁸ = 22453641409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 229742 + ... + 312551.

It is an arithmetic number, because the mean of its divisors is an integer number (942778119).

Almost surely, 2^22453641665 is an apocalyptic number.

It is an amenable number.

22453641665 is a deficient number, since it is larger than the sum of its proper divisors (11486370619).

22453641665 is a wasteful number, since it uses less digits than its factorization.

22453641665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542338 (or 542318 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 44.

The spelling of 22453641665 in words is "twenty-two billion, four hundred fifty-three million, six hundred forty-one thousand, six hundred sixty-five".