9645455775 has 24 divisors (see below), whose sum is σ = 16318023040. Its totient is φ = 5024607840.

The previous prime is 9645455749. The next prime is 9645455837. The reversal of 9645455775 is 5775545469.

It is not a de Polignac number, because 9645455775 - 2⁶ = 9645455711 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1492195 + ... + 1498644.

Almost surely, 2^9645455775 is an apocalyptic number.

9645455775 is a deficient number, since it is larger than the sum of its proper divisors (6672567265).

9645455775 is a wasteful number, since it uses less digits than its factorization.

9645455775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2990895 (or 2990890 counting only the distinct ones).

The product of its digits is 26460000, while the sum is 57.

The square root of 9645455775 is about 98211.2813020989. The cubic root of 9645455775 is about 2128.6663001260. Note that the first 3 decimals are identical.

The spelling of 9645455775 in words is "nine billion, six hundred forty-five million, four hundred fifty-five thousand, seven hundred seventy-five".