444722557819 has 2 divisors, whose sum is σ = 444722557820. Its totient is φ = 444722557818.

The previous prime is 444722557817. The next prime is 444722557823. The reversal of 444722557819 is 918755227444.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 444722557819 - 2¹ = 444722557817 is a prime.

It is a super-2 number, since 2×444722557819² (a number of 24 digits) contains 22 as substring.

Together with 444722557817, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (444722557813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222361278909 + 222361278910.

It is an arithmetic number, because the mean of its divisors is an integer number (222361278910).

Almost surely, 2^444722557819 is an apocalyptic number.

444722557819 is a deficient number, since it is larger than the sum of its proper divisors (1).

444722557819 is an equidigital number, since it uses as much as digits as its factorization.

444722557819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22579200, while the sum is 58.

The spelling of 444722557819 in words is "four hundred forty-four billion, seven hundred twenty-two million, five hundred fifty-seven thousand, eight hundred nineteen".