9645145871 has 2 divisors, whose sum is σ = 9645145872. Its totient is φ = 9645145870.

The previous prime is 9645145859. The next prime is 9645145897. The reversal of 9645145871 is 1785415469.

It is a weak prime.

It is an emirp because it is prime and its reverse (1785415469) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9645145871 - 2³⁰ = 8571404047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9645145771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4822572935 + 4822572936.

It is an arithmetic number, because the mean of its divisors is an integer number (4822572936).

Almost surely, 2^9645145871 is an apocalyptic number.

9645145871 is a deficient number, since it is larger than the sum of its proper divisors (1).

9645145871 is an equidigital number, since it uses as much as digits as its factorization.

9645145871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209600, while the sum is 50.

The square root of 9645145871 is about 98209.7035480711. The cubic root of 9645145871 is about 2128.6435021964.

The spelling of 9645145871 in words is "nine billion, six hundred forty-five million, one hundred forty-five thousand, eight hundred seventy-one".