9975395777 has 2 divisors, whose sum is σ = 9975395778. Its totient is φ = 9975395776.

The previous prime is 9975395747. The next prime is 9975395851. The reversal of 9975395777 is 7775935799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9178406416 + 796989361 = 95804^2 + 28231^2 .

It is a cyclic number.

It is not a de Polignac number, because 9975395777 - 2¹⁶ = 9975330241 is a prime.

It is not a weakly prime, because it can be changed into another prime (9975395737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4987697888 + 4987697889.

It is an arithmetic number, because the mean of its divisors is an integer number (4987697889).

Almost surely, 2^9975395777 is an apocalyptic number.

It is an amenable number.

9975395777 is a deficient number, since it is larger than the sum of its proper divisors (1).

9975395777 is an equidigital number, since it uses as much as digits as its factorization.

9975395777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131274675, while the sum is 68.

The square root of 9975395777 is about 99876.9031207916. The cubic root of 9975395777 is about 2152.6662991901. Note that the first 3 decimals are identical.

The spelling of 9975395777 in words is "nine billion, nine hundred seventy-five million, three hundred ninety-five thousand, seven hundred seventy-seven".