445006130320021 has 2 divisors, whose sum is σ = 445006130320022. Its totient is φ = 445006130320020.

The previous prime is 445006130320009. The next prime is 445006130320027. The reversal of 445006130320021 is 120023031600544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 444007901535025 + 998228784996 = 21071495^2 + 999114^2 .

It is a cyclic number.

It is not a de Polignac number, because 445006130320021 - 2³¹ = 445003982836373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445006130320027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222503065160010 + 222503065160011.

It is an arithmetic number, because the mean of its divisors is an integer number (222503065160011).

Almost surely, 2^{445006130320021} is an apocalyptic number.

It is an amenable number.

445006130320021 is a deficient number, since it is larger than the sum of its proper divisors (1).

445006130320021 is an equidigital number, since it uses as much as digits as its factorization.

445006130320021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 445006130320021 its reverse (120023031600544), we get a palindrome (565029161920565).

The spelling of 445006130320021 in words is "four hundred forty-five trillion, six billion, one hundred thirty million, three hundred twenty thousand, twenty-one".