7975065961 has 2 divisors, whose sum is σ = 7975065962. Its totient is φ = 7975065960.

The previous prime is 7975065929. The next prime is 7975065971. The reversal of 7975065961 is 1695605797.

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., 6122280025 + 1852785936 = 78245^2 + 43044^2 .

It is an emirp because it is prime and its reverse (1695605797) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7975065961 - 2⁵ = 7975065929 is a prime.

It is not a weakly prime, because it can be changed into another prime (7975065911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3987532980 + 3987532981.

It is an arithmetic number, because the mean of its divisors is an integer number (3987532981).

Almost surely, 2^7975065961 is an apocalyptic number.

It is an amenable number.

7975065961 is a deficient number, since it is larger than the sum of its proper divisors (1).

7975065961 is an equidigital number, since it uses as much as digits as its factorization.

7975065961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3572100, while the sum is 55.

The square root of 7975065961 is about 89303.2248073943. The cubic root of 7975065961 is about 1997.9200009686.

The spelling of 7975065961 in words is "seven billion, nine hundred seventy-five million, sixty-five thousand, nine hundred sixty-one".