444531664777 has 2 divisors, whose sum is σ = 444531664778. Its totient is φ = 444531664776.

The previous prime is 444531664763. The next prime is 444531664879. The reversal of 444531664777 is 777466135444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 426329337721 + 18202327056 = 652939^2 + 134916^2 .

It is a cyclic number.

It is not a de Polignac number, because 444531664777 - 2¹⁵ = 444531632009 is a prime.

It is a super-2 number, since 2×444531664777² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (444531664757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222265832388 + 222265832389.

It is an arithmetic number, because the mean of its divisors is an integer number (222265832389).

Almost surely, 2^444531664777 is an apocalyptic number.

It is an amenable number.

444531664777 is a deficient number, since it is larger than the sum of its proper divisors (1).

444531664777 is an equidigital number, since it uses as much as digits as its factorization.

444531664777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47416320, while the sum is 58.

The spelling of 444531664777 in words is "four hundred forty-four billion, five hundred thirty-one million, six hundred sixty-four thousand, seven hundred seventy-seven".