7644110081 has 2 divisors, whose sum is σ = 7644110082. Its totient is φ = 7644110080.

The previous prime is 7644110063. The next prime is 7644110093. The reversal of 7644110081 is 1800114467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6775923856 + 868186225 = 82316^2 + 29465^2 .

It is an emirp because it is prime and its reverse (1800114467) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7644110081 is a prime.

It is a super-2 number, since 2×7644110081² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (7644110021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3822055040 + 3822055041.

It is an arithmetic number, because the mean of its divisors is an integer number (3822055041).

Almost surely, 2^7644110081 is an apocalyptic number.

It is an amenable number.

7644110081 is a deficient number, since it is larger than the sum of its proper divisors (1).

7644110081 is an equidigital number, since it uses as much as digits as its factorization.

7644110081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 7644110081 is about 87430.6015134289. The cubic root of 7644110081 is about 1969.8915209921.

The spelling of 7644110081 in words is "seven billion, six hundred forty-four million, one hundred ten thousand, eighty-one".