9651728113 has 2 divisors, whose sum is σ = 9651728114. Its totient is φ = 9651728112.

The previous prime is 9651728101. The next prime is 9651728117. The reversal of 9651728113 is 3118271569.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5494960384 + 4156767729 = 74128^2 + 64473^2 .

It is a cyclic number.

It is not a de Polignac number, because 9651728113 - 2²⁹ = 9114857201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9651728113.

It is not a weakly prime, because it can be changed into another prime (9651728117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4825864056 + 4825864057.

It is an arithmetic number, because the mean of its divisors is an integer number (4825864057).

Almost surely, 2^9651728113 is an apocalyptic number.

It is an amenable number.

9651728113 is a deficient number, since it is larger than the sum of its proper divisors (1).

9651728113 is an equidigital number, since it uses as much as digits as its factorization.

9651728113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 43.

The square root of 9651728113 is about 98243.2089917670. The cubic root of 9651728113 is about 2129.1276165470.

The spelling of 9651728113 in words is "nine billion, six hundred fifty-one million, seven hundred twenty-eight thousand, one hundred thirteen".