9716044781 has 2 divisors, whose sum is σ = 9716044782. Its totient is φ = 9716044780.

The previous prime is 9716044777. The next prime is 9716044829. The reversal of 9716044781 is 1874406179.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8002912681 + 1713132100 = 89459^2 + 41390^2 .

It is a cyclic number.

It is not a de Polignac number, because 9716044781 - 2² = 9716044777 is a prime.

It is a super-2 number, since 2×9716044781² (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 (9716044181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4858022390 + 4858022391.

It is an arithmetic number, because the mean of its divisors is an integer number (4858022391).

Almost surely, 2^9716044781 is an apocalyptic number.

It is an amenable number.

9716044781 is a deficient number, since it is larger than the sum of its proper divisors (1).

9716044781 is an equidigital number, since it uses as much as digits as its factorization.

9716044781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 9716044781 is about 98569.9993963681. Note that the first 3 decimals coincide. The cubic root of 9716044781 is about 2133.8464723934.

The spelling of 9716044781 in words is "nine billion, seven hundred sixteen million, forty-four thousand, seven hundred eighty-one".