444144374137 has 2 divisors, whose sum is σ = 444144374138. Its totient is φ = 444144374136.

The previous prime is 444144374099. The next prime is 444144374183. The reversal of 444144374137 is 731473441444.

It is an a-pointer prime, because the next prime (444144374183) can be obtained adding 444144374137 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 361470298176 + 82674075961 = 601224^2 + 287531^2 .

It is a cyclic number.

It is not a de Polignac number, because 444144374137 - 2²⁷ = 444010156409 is a prime.

It is not a weakly prime, because it can be changed into another prime (444144374537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222072187068 + 222072187069.

It is an arithmetic number, because the mean of its divisors is an integer number (222072187069).

Almost surely, 2^444144374137 is an apocalyptic number.

It is an amenable number.

444144374137 is a deficient number, since it is larger than the sum of its proper divisors (1).

444144374137 is an equidigital number, since it uses as much as digits as its factorization.

444144374137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1806336, while the sum is 46.

The spelling of 444144374137 in words is "four hundred forty-four billion, one hundred forty-four million, three hundred seventy-four thousand, one hundred thirty-seven".