774741831551 has 2 divisors, whose sum is σ = 774741831552. Its totient is φ = 774741831550.

The previous prime is 774741831547. The next prime is 774741831601. The reversal of 774741831551 is 155138147477.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 774741831551 - 2² = 774741831547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 774741831493 and 774741831502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (774741831541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387370915775 + 387370915776.

It is an arithmetic number, because the mean of its divisors is an integer number (387370915776).

Almost surely, 2^774741831551 is an apocalyptic number.

774741831551 is a deficient number, since it is larger than the sum of its proper divisors (1).

774741831551 is an equidigital number, since it uses as much as digits as its factorization.

774741831551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3292800, while the sum is 53.

The spelling of 774741831551 in words is "seven hundred seventy-four billion, seven hundred forty-one million, eight hundred thirty-one thousand, five hundred fifty-one".