444445555457 has 2 divisors, whose sum is σ = 444445555458. Its totient is φ = 444445555456.

The previous prime is 444445555429. The next prime is 444445555529. The reversal of 444445555457 is 754555544444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 443135187856 + 1310367601 = 665684^2 + 36199^2 .

It is a cyclic number.

It is not a de Polignac number, because 444445555457 - 2³⁴ = 427265686273 is a prime.

It is not a weakly prime, because it can be changed into another prime (444445558457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222222777728 + 222222777729.

It is an arithmetic number, because the mean of its divisors is an integer number (222222777729).

Almost surely, 2^444445555457 is an apocalyptic number.

It is an amenable number.

444445555457 is a deficient number, since it is larger than the sum of its proper divisors (1).

444445555457 is an equidigital number, since it uses as much as digits as its factorization.

444445555457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 89600000, while the sum is 56.

The spelling of 444445555457 in words is "four hundred forty-four billion, four hundred forty-five million, five hundred fifty-five thousand, four hundred fifty-seven".