7806833681 has 2 divisors, whose sum is σ = 7806833682. Its totient is φ = 7806833680.

The previous prime is 7806833663. The next prime is 7806833743. The reversal of 7806833681 is 1863386087.

7806833681 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5889795025 + 1917038656 = 76745^2 + 43784^2 .

It is an emirp because it is prime and its reverse (1863386087) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7806833681 - 2¹⁸ = 7806571537 is a prime.

It is a super-2 number, since 2×7806833681² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7806833081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3903416840 + 3903416841.

It is an arithmetic number, because the mean of its divisors is an integer number (3903416841).

Almost surely, 2^7806833681 is an apocalyptic number.

It is an amenable number.

7806833681 is a deficient number, since it is larger than the sum of its proper divisors (1).

7806833681 is an equidigital number, since it uses as much as digits as its factorization.

7806833681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The square root of 7806833681 is about 88356.2882934769. The cubic root of 7806833681 is about 1983.7714804958.

The spelling of 7806833681 in words is "seven billion, eight hundred six million, eight hundred thirty-three thousand, six hundred eighty-one".