442430563139549 has 2 divisors, whose sum is σ = 442430563139550. Its totient is φ = 442430563139548.

The previous prime is 442430563139479. The next prime is 442430563139567. The reversal of 442430563139549 is 945931365034244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 367872208200025 + 74558354939524 = 19179995^2 + 8634718^2 .

It is a cyclic number.

It is not a de Polignac number, because 442430563139549 - 2⁴⁸ = 160955586428893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 442430563139491 and 442430563139500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442430563135549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221215281569774 + 221215281569775.

It is an arithmetic number, because the mean of its divisors is an integer number (221215281569775).

Almost surely, 2^{442430563139549} is an apocalyptic number.

It is an amenable number.

442430563139549 is a deficient number, since it is larger than the sum of its proper divisors (1).

442430563139549 is an equidigital number, since it uses as much as digits as its factorization.

442430563139549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 167961600, while the sum is 62.

The spelling of 442430563139549 in words is "four hundred forty-two trillion, four hundred thirty billion, five hundred sixty-three million, one hundred thirty-nine thousand, five hundred forty-nine".