444002660861 has 2 divisors, whose sum is σ = 444002660862. Its totient is φ = 444002660860.

The previous prime is 444002660779. The next prime is 444002660869. The reversal of 444002660861 is 168066200444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 266261160025 + 177741500836 = 516005^2 + 421594^2 .

It is a cyclic number.

It is not a de Polignac number, because 444002660861 - 2¹⁸ = 444002398717 is a prime.

It is a super-2 number, since 2×444002660861² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444002660869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222001330430 + 222001330431.

It is an arithmetic number, because the mean of its divisors is an integer number (222001330431).

Almost surely, 2^444002660861 is an apocalyptic number.

It is an amenable number.

444002660861 is a deficient number, since it is larger than the sum of its proper divisors (1).

444002660861 is an equidigital number, since it uses as much as digits as its factorization.

444002660861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 41.

The spelling of 444002660861 in words is "four hundred forty-four billion, two million, six hundred sixty thousand, eight hundred sixty-one".