9864646545 has 32 divisors (see below), whose sum is σ = 17008814592. Its totient is φ = 4853221632.

The previous prime is 9864646531. The next prime is 9864646567. The reversal of 9864646545 is 5456464689.

It is not a de Polignac number, because 9864646545 - 2¹⁰ = 9864645521 is a prime.

It is a super-2 number, since 2×9864646545² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292707 + ... + 324663.

It is an arithmetic number, because the mean of its divisors is an integer number (531525456).

Almost surely, 2^9864646545 is an apocalyptic number.

It is an amenable number.

9864646545 is a deficient number, since it is larger than the sum of its proper divisors (7144168047).

9864646545 is a wasteful number, since it uses less digits than its factorization.

9864646545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33561.

The product of its digits is 24883200, while the sum is 57.

The square root of 9864646545 is about 99320.9270244695. The cubic root of 9864646545 is about 2144.6701618988.

The spelling of 9864646545 in words is "nine billion, eight hundred sixty-four million, six hundred forty-six thousand, five hundred forty-five".