22461450066665 has 4 divisors (see below), whose sum is σ = 26953740080004. Its totient is φ = 17969160053328.

The previous prime is 22461450066647. The next prime is 22461450066673. The reversal of 22461450066665 is 56666005416422.

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 12354290027689 + 10107160038976 = 3514867^2 + 3179176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22461450066665 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 (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2246145006662 + ... + 2246145006671.

It is an arithmetic number, because the mean of its divisors is an integer number (6738435020001).

Almost surely, 2^{22461450066665} is an apocalyptic number.

It is an amenable number.

22461450066665 is a deficient number, since it is larger than the sum of its proper divisors (4492290013339).

22461450066665 is an equidigital number, since it uses as much as digits as its factorization.

22461450066665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4492290013338.

The product of its (nonzero) digits is 12441600, while the sum is 53.

The spelling of 22461450066665 in words is "twenty-two trillion, four hundred sixty-one billion, four hundred fifty million, sixty-six thousand, six hundred sixty-five".