774131829281 has 2 divisors, whose sum is σ = 774131829282. Its totient is φ = 774131829280.

The previous prime is 774131829223. The next prime is 774131829313. The reversal of 774131829281 is 182928131477.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 424170848656 + 349960980625 = 651284^2 + 591575^2 .

It is a cyclic number.

It is not a de Polignac number, because 774131829281 - 2⁶ = 774131829217 is a prime.

It is a super-2 number, since 2×774131829281² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (774131822281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387065914640 + 387065914641.

It is an arithmetic number, because the mean of its divisors is an integer number (387065914641).

Almost surely, 2^774131829281 is an apocalyptic number.

It is an amenable number.

774131829281 is a deficient number, since it is larger than the sum of its proper divisors (1).

774131829281 is an equidigital number, since it uses as much as digits as its factorization.

774131829281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 53.

The spelling of 774131829281 in words is "seven hundred seventy-four billion, one hundred thirty-one million, eight hundred twenty-nine thousand, two hundred eighty-one".