774944449441 has 2 divisors, whose sum is σ = 774944449442. Its totient is φ = 774944449440.

The previous prime is 774944449427. The next prime is 774944449481. The reversal of 774944449441 is 144944449477.

774944449441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 720979301025 + 53965148416 = 849105^2 + 232304^2 .

It is an emirp because it is prime and its reverse (144944449477) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 774944449441 - 2¹¹ = 774944447393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 774944449441.

It is not a weakly prime, because it can be changed into another prime (774944449481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387472224720 + 387472224721.

It is an arithmetic number, because the mean of its divisors is an integer number (387472224721).

Almost surely, 2^774944449441 is an apocalyptic number.

It is an amenable number.

774944449441 is a deficient number, since it is larger than the sum of its proper divisors (1).

774944449441 is an equidigital number, since it uses as much as digits as its factorization.

774944449441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65028096, while the sum is 61.

The spelling of 774944449441 in words is "seven hundred seventy-four billion, nine hundred forty-four million, four hundred forty-nine thousand, four hundred forty-one".