774113223649 has 2 divisors, whose sum is σ = 774113223650. Its totient is φ = 774113223648.

The previous prime is 774113223589. The next prime is 774113223691. The reversal of 774113223649 is 946322311477.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 682594873249 + 91518350400 = 826193^2 + 302520^2 .

It is an emirp because it is prime and its reverse (946322311477) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 774113223649 - 2¹⁹ = 774112699361 is a prime.

It is not a weakly prime, because it can be changed into another prime (774113227649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387056611824 + 387056611825.

It is an arithmetic number, because the mean of its divisors is an integer number (387056611825).

Almost surely, 2^774113223649 is an apocalyptic number.

It is an amenable number.

774113223649 is a deficient number, since it is larger than the sum of its proper divisors (1).

774113223649 is an equidigital number, since it uses as much as digits as its factorization.

774113223649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 49.

The spelling of 774113223649 in words is "seven hundred seventy-four billion, one hundred thirteen million, two hundred twenty-three thousand, six hundred forty-nine".