774944449481 has 2 divisors, whose sum is σ = 774944449482. Its totient is φ = 774944449480.

The previous prime is 774944449441. The next prime is 774944449501. The reversal of 774944449481 is 184944449477.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 733619658256 + 41324791225 = 856516^2 + 203285^2 .

It is a cyclic number.

It is not a de Polignac number, because 774944449481 - 2¹⁴ = 774944433097 is a prime.

It is a super-2 number, since 2×774944449481² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (774944449441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387472224740 + 387472224741.

It is an arithmetic number, because the mean of its divisors is an integer number (387472224741).

Almost surely, 2^774944449481 is an apocalyptic number.

It is an amenable number.

774944449481 is a deficient number, since it is larger than the sum of its proper divisors (1).

774944449481 is an equidigital number, since it uses as much as digits as its factorization.

774944449481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 130056192, while the sum is 65.

The spelling of 774944449481 in words is "seven hundred seventy-four billion, nine hundred forty-four million, four hundred forty-nine thousand, four hundred eighty-one".