445243342493 has 2 divisors, whose sum is σ = 445243342494. Its totient is φ = 445243342492.

The previous prime is 445243342421. The next prime is 445243342517. The reversal of 445243342493 is 394243342544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 341199679129 + 104043663364 = 584123^2 + 322558^2 .

It is a cyclic number.

It is not a de Polignac number, because 445243342493 - 2⁸ = 445243342237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445243342403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222621671246 + 222621671247.

It is an arithmetic number, because the mean of its divisors is an integer number (222621671247).

Almost surely, 2^445243342493 is an apocalyptic number.

It is an amenable number.

445243342493 is a deficient number, since it is larger than the sum of its proper divisors (1).

445243342493 is an equidigital number, since it uses as much as digits as its factorization.

445243342493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4976640, while the sum is 47.

The spelling of 445243342493 in words is "four hundred forty-five billion, two hundred forty-three million, three hundred forty-two thousand, four hundred ninety-three".