445504155204481 has 2 divisors, whose sum is σ = 445504155204482. Its totient is φ = 445504155204480.

The previous prime is 445504155204413. The next prime is 445504155204487. The reversal of 445504155204481 is 184402551405544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 445205104813456 + 299050391025 = 21099884^2 + 546855^2 .

It is a cyclic number.

It is not a de Polignac number, because 445504155204481 - 2³³ = 445495565269889 is a prime.

It is a super-2 number, since 2×445504155204481² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (445504155204487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222752077602240 + 222752077602241.

It is an arithmetic number, because the mean of its divisors is an integer number (222752077602241).

Almost surely, 2^{445504155204481} is an apocalyptic number.

It is an amenable number.

445504155204481 is a deficient number, since it is larger than the sum of its proper divisors (1).

445504155204481 is an equidigital number, since it uses as much as digits as its factorization.

445504155204481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10240000, while the sum is 52.

The spelling of 445504155204481 in words is "four hundred forty-five trillion, five hundred four billion, one hundred fifty-five million, two hundred four thousand, four hundred eighty-one".