7799707121 has 2 divisors, whose sum is σ = 7799707122. Its totient is φ = 7799707120.

The previous prime is 7799707079. The next prime is 7799707127. The reversal of 7799707121 is 1217079977.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5414752225 + 2384954896 = 73585^2 + 48836^2 .

It is a cyclic number.

It is not a de Polignac number, because 7799707121 - 2⁶ = 7799707057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7799707121.

It is not a weakly prime, because it can be changed into another prime (7799707127) 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, 3899853560 + 3899853561.

It is an arithmetic number, because the mean of its divisors is an integer number (3899853561).

Almost surely, 2^7799707121 is an apocalyptic number.

It is an amenable number.

7799707121 is a deficient number, since it is larger than the sum of its proper divisors (1).

7799707121 is an equidigital number, since it uses as much as digits as its factorization.

7799707121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388962, while the sum is 50.

The square root of 7799707121 is about 88315.9505468859. The cubic root of 7799707121 is about 1983.1676603431.

The spelling of 7799707121 in words is "seven billion, seven hundred ninety-nine million, seven hundred seven thousand, one hundred twenty-one".