444140117857 has 2 divisors, whose sum is σ = 444140117858. Its totient is φ = 444140117856.

The previous prime is 444140117801. The next prime is 444140117899. The reversal of 444140117857 is 758711041444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 434170295056 + 9969822801 = 658916^2 + 99849^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444140117857 is a prime.

It is not a weakly prime, because it can be changed into another prime (444140117657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222070058928 + 222070058929.

It is an arithmetic number, because the mean of its divisors is an integer number (222070058929).

Almost surely, 2^444140117857 is an apocalyptic number.

It is an amenable number.

444140117857 is a deficient number, since it is larger than the sum of its proper divisors (1).

444140117857 is an equidigital number, since it uses as much as digits as its factorization.

444140117857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 501760, while the sum is 46.

The spelling of 444140117857 in words is "four hundred forty-four billion, one hundred forty million, one hundred seventeen thousand, eight hundred fifty-seven".