445668957869 has 2 divisors, whose sum is σ = 445668957870. Its totient is φ = 445668957868.

The previous prime is 445668957823. The next prime is 445668957893. The reversal of 445668957869 is 968759866544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 440382213769 + 5286744100 = 663613^2 + 72710^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445668957869 is a prime.

It is a super-2 number, since 2×445668957869² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 445668957869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445668956869) by changing a digit.

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 as a sum of consecutive naturals, namely, 222834478934 + 222834478935.

It is an arithmetic number, because the mean of its divisors is an integer number (222834478935).

Almost surely, 2^445668957869 is an apocalyptic number.

It is an amenable number.

445668957869 is a deficient number, since it is larger than the sum of its proper divisors (1).

445668957869 is an equidigital number, since it uses as much as digits as its factorization.

445668957869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3135283200, while the sum is 77.

The spelling of 445668957869 in words is "four hundred forty-five billion, six hundred sixty-eight million, nine hundred fifty-seven thousand, eight hundred sixty-nine".