13774256281 has 2 divisors, whose sum is σ = 13774256282. Its totient is φ = 13774256280.

The previous prime is 13774256213. The next prime is 13774256299. The reversal of 13774256281 is 18265247731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13292014681 + 482241600 = 115291^2 + 21960^2 .

It is a cyclic number.

It is not a de Polignac number, because 13774256281 - 2²³ = 13765867673 is a prime.

It is a super-2 number, since 2×13774256281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13774256201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6887128140 + 6887128141.

It is an arithmetic number, because the mean of its divisors is an integer number (6887128141).

Almost surely, 2^13774256281 is an apocalyptic number.

It is an amenable number.

13774256281 is a deficient number, since it is larger than the sum of its proper divisors (1).

13774256281 is an equidigital number, since it uses as much as digits as its factorization.

13774256281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 564480, while the sum is 46.

The spelling of 13774256281 in words is "thirteen billion, seven hundred seventy-four million, two hundred fifty-six thousand, two hundred eighty-one".