7658130121 has 2 divisors, whose sum is σ = 7658130122. Its totient is φ = 7658130120.

The previous prime is 7658130037. The next prime is 7658130149. The reversal of 7658130121 is 1210318567.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5392846096 + 2265284025 = 73436^2 + 47595^2 .

It is a cyclic number.

It is not a de Polignac number, because 7658130121 - 2¹⁵ = 7658097353 is a prime.

It is not a weakly prime, because it can be changed into another prime (7658130191) 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, 3829065060 + 3829065061.

It is an arithmetic number, because the mean of its divisors is an integer number (3829065061).

Almost surely, 2^7658130121 is an apocalyptic number.

It is an amenable number.

7658130121 is a deficient number, since it is larger than the sum of its proper divisors (1).

7658130121 is an equidigital number, since it uses as much as digits as its factorization.

7658130121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 7658130121 is about 87510.7428890876. The cubic root of 7658130121 is about 1971.0951095563.

Adding to 7658130121 its reverse (1210318567), we get a palindrome (8868448688).

The spelling of 7658130121 in words is "seven billion, six hundred fifty-eight million, one hundred thirty thousand, one hundred twenty-one".