445666993417 has 8 divisors (see below), whose sum is σ = 451192635080. Its totient is φ = 440167478400.

The previous prime is 445666993399. The next prime is 445666993477. The reversal of 445666993417 is 714399666544.

It can be written as a sum of positive squares in 4 ways, for example, as 25167918736 + 420499074681 = 158644^2 + 648459^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445666993417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445666993477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6497334 + ... + 6565567.

It is an arithmetic number, because the mean of its divisors is an integer number (56399079385).

Almost surely, 2^445666993417 is an apocalyptic number.

It is an amenable number.

445666993417 is a deficient number, since it is larger than the sum of its proper divisors (5525641663).

445666993417 is a wasteful number, since it uses less digits than its factorization.

445666993417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13063323.

The product of its digits is 117573120, while the sum is 64.

The spelling of 445666993417 in words is "four hundred forty-five billion, six hundred sixty-six million, nine hundred ninety-three thousand, four hundred seventeen".