445322141223521 has 2 divisors, whose sum is σ = 445322141223522. Its totient is φ = 445322141223520.

The previous prime is 445322141223493. The next prime is 445322141223563. The reversal of 445322141223521 is 125322141223544.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 370169904040000 + 75152237183521 = 19239800^2 + 8669039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445322141223521 is a prime.

It is not a weakly prime, because it can be changed into another prime (445322141223121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222661070611760 + 222661070611761.

It is an arithmetic number, because the mean of its divisors is an integer number (222661070611761).

Almost surely, 2^{445322141223521} is an apocalyptic number.

It is an amenable number.

445322141223521 is a deficient number, since it is larger than the sum of its proper divisors (1).

445322141223521 is an equidigital number, since it uses as much as digits as its factorization.

445322141223521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 460800, while the sum is 41.

The spelling of 445322141223521 in words is "four hundred forty-five trillion, three hundred twenty-two billion, one hundred forty-one million, two hundred twenty-three thousand, five hundred twenty-one".