9645500509699 has 2 divisors, whose sum is σ = 9645500509700. Its totient is φ = 9645500509698.

The previous prime is 9645500509607. The next prime is 9645500509709. The reversal of 9645500509699 is 9969050055469.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9645500509699 - 2³³ = 9636910575107 is a prime.

It is not a weakly prime, because it can be changed into another prime (9645500509999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4822750254849 + 4822750254850.

It is an arithmetic number, because the mean of its divisors is an integer number (4822750254850).

Almost surely, 2^{9645500509699} is an apocalyptic number.

9645500509699 is a deficient number, since it is larger than the sum of its proper divisors (1).

9645500509699 is an equidigital number, since it uses as much as digits as its factorization.

9645500509699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 118098000, while the sum is 67.

The spelling of 9645500509699 in words is "nine trillion, six hundred forty-five billion, five hundred million, five hundred nine thousand, six hundred ninety-nine".