445745642474477 has 2 divisors, whose sum is σ = 445745642474478. Its totient is φ = 445745642474476.

The previous prime is 445745642474371. The next prime is 445745642474513. The reversal of 445745642474477 is 774474246547544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 442606742844841 + 3138899629636 = 21038221^2 + 1771694^2 .

It is a cyclic number.

It is not a de Polignac number, because 445745642474477 - 2¹⁴ = 445745642458093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445745642474177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222872821237238 + 222872821237239.

It is an arithmetic number, because the mean of its divisors is an integer number (222872821237239).

Almost surely, 2^{445745642474477} is an apocalyptic number.

It is an amenable number.

445745642474477 is a deficient number, since it is larger than the sum of its proper divisors (1).

445745642474477 is an equidigital number, since it uses as much as digits as its factorization.

445745642474477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11801395200, while the sum is 74.

The spelling of 445745642474477 in words is "four hundred forty-five trillion, seven hundred forty-five billion, six hundred forty-two million, four hundred seventy-four thousand, four hundred seventy-seven".