9778602797 has 2 divisors, whose sum is σ = 9778602798. Its totient is φ = 9778602796.

The previous prime is 9778602763. The next prime is 9778602839. The reversal of 9778602797 is 7972068779.

9778602797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9774485956 + 4116841 = 98866^2 + 2029^2 .

It is a cyclic number.

It is not a de Polignac number, because 9778602797 - 2¹⁶ = 9778537261 is a prime.

It is a super-2 number, since 2×9778602797² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9778601797) 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, 4889301398 + 4889301399.

It is an arithmetic number, because the mean of its divisors is an integer number (4889301399).

Almost surely, 2^9778602797 is an apocalyptic number.

It is an amenable number.

9778602797 is a deficient number, since it is larger than the sum of its proper divisors (1).

9778602797 is an equidigital number, since it uses as much as digits as its factorization.

9778602797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18670176, while the sum is 62.

The square root of 9778602797 is about 98886.8181154597. The cubic root of 9778602797 is about 2138.4163609757.

The spelling of 9778602797 in words is "nine billion, seven hundred seventy-eight million, six hundred two thousand, seven hundred ninety-seven".