9645500799 has 48 divisors (see below), whose sum is σ = 15416593920. Its totient is φ = 5762382720.

The previous prime is 9645500791. The next prime is 9645500819. The reversal of 9645500799 is 9970055469.

9645500799 is a `hidden beast` number, since 9 + 6 + 45 + 500 + 7 + 99 = 666.

It is not a de Polignac number, because 9645500799 - 2³ = 9645500791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9645500791) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4674442 + ... + 4676504.

It is an arithmetic number, because the mean of its divisors is an integer number (321179040).

Almost surely, 2^9645500799 is an apocalyptic number.

9645500799 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

9645500799 is a deficient number, since it is larger than the sum of its proper divisors (5771093121).

9645500799 is a wasteful number, since it uses less digits than its factorization.

9645500799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2732 (or 2729 counting only the distinct ones).

The product of its (nonzero) digits is 3061800, while the sum is 54.

The square root of 9645500799 is about 98211.5105219342. The cubic root of 9645500799 is about 2128.6696122530.

The spelling of 9645500799 in words is "nine billion, six hundred forty-five million, five hundred thousand, seven hundred ninety-nine".