445631051665453 has 2 divisors, whose sum is σ = 445631051665454. Its totient is φ = 445631051665452.

The previous prime is 445631051665441. The next prime is 445631051665469. The reversal of 445631051665453 is 354566150136544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 272817994943209 + 172813056722244 = 16517203^2 + 13145838^2 .

It is a cyclic number.

It is not a de Polignac number, because 445631051665453 - 2¹⁷ = 445631051534381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445631051665853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222815525832726 + 222815525832727.

It is an arithmetic number, because the mean of its divisors is an integer number (222815525832727).

Almost surely, 2^{445631051665453} is an apocalyptic number.

It is an amenable number.

445631051665453 is a deficient number, since it is larger than the sum of its proper divisors (1).

445631051665453 is an equidigital number, since it uses as much as digits as its factorization.

445631051665453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760000, while the sum is 58.

The spelling of 445631051665453 in words is "four hundred forty-five trillion, six hundred thirty-one billion, fifty-one million, six hundred sixty-five thousand, four hundred fifty-three".