22144467654665 has 4 divisors (see below), whose sum is σ = 26573361185604. Its totient is φ = 17715574123728.

The previous prime is 22144467654583. The next prime is 22144467654719. The reversal of 22144467654665 is 56645676444122.

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 3896218045456 + 18248249609209 = 1973884^2 + 4271797^2 .

It is a cyclic number.

It is not a de Polignac number, because 22144467654665 - 2¹⁰ = 22144467653641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22144467654598 and 22144467654607.

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 3 ways as a sum of consecutive naturals, for example, 2214446765462 + ... + 2214446765471.

It is an arithmetic number, because the mean of its divisors is an integer number (6643340296401).

Almost surely, 2^{22144467654665} is an apocalyptic number.

It is an amenable number.

22144467654665 is a deficient number, since it is larger than the sum of its proper divisors (4428893530939).

22144467654665 is an equidigital number, since it uses as much as digits as its factorization.

22144467654665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4428893530938.

The product of its digits is 232243200, while the sum is 62.

The spelling of 22144467654665 in words is "twenty-two trillion, one hundred forty-four billion, four hundred sixty-seven million, six hundred fifty-four thousand, six hundred sixty-five".