442651250609 has 2 divisors, whose sum is σ = 442651250610. Its totient is φ = 442651250608.

The previous prime is 442651250567. The next prime is 442651250623. The reversal of 442651250609 is 906052156244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230498890609 + 212152360000 = 480103^2 + 460600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442651250609 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 442651250609.

It is not a weakly prime, because it can be changed into another prime (442651250659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221325625304 + 221325625305.

It is an arithmetic number, because the mean of its divisors is an integer number (221325625305).

Almost surely, 2^442651250609 is an apocalyptic number.

It is an amenable number.

442651250609 is a deficient number, since it is larger than the sum of its proper divisors (1).

442651250609 is an equidigital number, since it uses as much as digits as its factorization.

442651250609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 442651250609 in words is "four hundred forty-two billion, six hundred fifty-one million, two hundred fifty thousand, six hundred nine".