4418466589921 has 2 divisors, whose sum is σ = 4418466589922. Its totient is φ = 4418466589920.

The previous prime is 4418466589909. The next prime is 4418466589963. The reversal of 4418466589921 is 1299856648144.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4088888410000 + 329578179921 = 2022100^2 + 574089^2 .

It is a cyclic number.

It is not a de Polignac number, because 4418466589921 - 2¹⁹ = 4418466065633 is a prime.

It is a super-2 number, since 2×4418466589921² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4418466589981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2209233294960 + 2209233294961.

It is an arithmetic number, because the mean of its divisors is an integer number (2209233294961).

Almost surely, 2^{4418466589921} is an apocalyptic number.

It is an amenable number.

4418466589921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4418466589921 is an equidigital number, since it uses as much as digits as its factorization.

4418466589921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 119439360, while the sum is 67.

The spelling of 4418466589921 in words is "four trillion, four hundred eighteen billion, four hundred sixty-six million, five hundred eighty-nine thousand, nine hundred twenty-one".