5126684681 has 4 divisors (see below), whose sum is σ = 5128646292. Its totient is φ = 5124723072.

The previous prime is 5126684677. The next prime is 5126684701. The reversal of 5126684681 is 1864866215.

5126684681 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 3287990281 + 1838694400 = 57341^2 + 42880^2 .

It is a cyclic number.

It is not a de Polignac number, because 5126684681 - 2² = 5126684677 is a prime.

It is a super-2 number, since 2×5126684681² = 52565791636800143522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5126684621) 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, 976880 + ... + 982113.

It is an arithmetic number, because the mean of its divisors is an integer number (1282161573).

Almost surely, 2^5126684681 is an apocalyptic number.

It is an amenable number.

5126684681 is a deficient number, since it is larger than the sum of its proper divisors (1961611).

5126684681 is a wasteful number, since it uses less digits than its factorization.

5126684681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1961610.

The product of its digits is 552960, while the sum is 47.

The square root of 5126684681 is about 71600.8706720805. The cubic root of 5126684681 is about 1724.2975148145.

The spelling of 5126684681 in words is "five billion, one hundred twenty-six million, six hundred eighty-four thousand, six hundred eighty-one".