5435768806681 has 4 divisors (see below), whose sum is σ = 5459098286772. Its totient is φ = 5412439326592.

The previous prime is 5435768806673. The next prime is 5435768806703. The reversal of 5435768806681 is 1866088675345.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3522847455625 + 1912921351056 = 1876925^2 + 1383084^2 .

It is a cyclic number.

It is not a de Polignac number, because 5435768806681 - 2³ = 5435768806673 is a prime.

It is a super-2 number, since 2×5435768806681² (a number of 26 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5435768803681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11664739696 + ... + 11664740161.

It is an arithmetic number, because the mean of its divisors is an integer number (1364774571693).

Almost surely, 2^{5435768806681} is an apocalyptic number.

It is an amenable number.

5435768806681 is a deficient number, since it is larger than the sum of its proper divisors (23329480091).

5435768806681 is a wasteful number, since it uses less digits than its factorization.

5435768806681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23329480090.

The product of its (nonzero) digits is 232243200, while the sum is 67.

The spelling of 5435768806681 in words is "five trillion, four hundred thirty-five billion, seven hundred sixty-eight million, eight hundred six thousand, six hundred eighty-one".