442778794399 has 2 divisors, whose sum is σ = 442778794400. Its totient is φ = 442778794398.

The previous prime is 442778794379. The next prime is 442778794433. The reversal of 442778794399 is 993497877244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442778794399 - 2¹⁹ = 442778270111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442778794379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221389397199 + 221389397200.

It is an arithmetic number, because the mean of its divisors is an integer number (221389397200).

Almost surely, 2^442778794399 is an apocalyptic number.

442778794399 is a deficient number, since it is larger than the sum of its proper divisors (1).

442778794399 is an equidigital number, since it uses as much as digits as its factorization.

442778794399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768144384, while the sum is 73.

The spelling of 442778794399 in words is "four hundred forty-two billion, seven hundred seventy-eight million, seven hundred ninety-four thousand, three hundred ninety-nine".