9996645751 has 2 divisors, whose sum is σ = 9996645752. Its totient is φ = 9996645750.

The previous prime is 9996645727. The next prime is 9996645781. The reversal of 9996645751 is 1575466999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9996645751 - 2¹¹ = 9996643703 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9996645751.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9996645781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4998322875 + 4998322876.

It is an arithmetic number, because the mean of its divisors is an integer number (4998322876).

Almost surely, 2^9996645751 is an apocalyptic number.

9996645751 is a deficient number, since it is larger than the sum of its proper divisors (1).

9996645751 is an equidigital number, since it uses as much as digits as its factorization.

9996645751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18370800, while the sum is 61.

The square root of 9996645751 is about 99983.2273483908. The cubic root of 9996645751 is about 2154.1937794139.

The spelling of 9996645751 in words is "nine billion, nine hundred ninety-six million, six hundred forty-five thousand, seven hundred fifty-one".