2681698288433 has 2 divisors, whose sum is σ = 2681698288434. Its totient is φ = 2681698288432.

The previous prime is 2681698288391. The next prime is 2681698288447. The reversal of 2681698288433 is 3348828961862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2279822168464 + 401876119969 = 1509908^2 + 633937^2 .

It is a cyclic number.

It is not a de Polignac number, because 2681698288433 - 2²⁴ = 2681681511217 is a prime.

It is not a weakly prime, because it can be changed into another prime (2681698288483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1340849144216 + 1340849144217.

It is an arithmetic number, because the mean of its divisors is an integer number (1340849144217).

Almost surely, 2^{2681698288433} is an apocalyptic number.

It is an amenable number.

2681698288433 is a deficient number, since it is larger than the sum of its proper divisors (1).

2681698288433 is an equidigital number, since it uses as much as digits as its factorization.

2681698288433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 191102976, while the sum is 68.

The spelling of 2681698288433 in words is "two trillion, six hundred eighty-one billion, six hundred ninety-eight million, two hundred eighty-eight thousand, four hundred thirty-three".