864991648595 has 16 divisors (see below), whose sum is σ = 1038946272672. Its totient is φ = 691356072960.

The previous prime is 864991648567. The next prime is 864991648667. The reversal of 864991648595 is 595846199468.

It is not a de Polignac number, because 864991648595 - 2¹² = 864991644499 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 28435664 + ... + 28466066.

It is an arithmetic number, because the mean of its divisors is an integer number (64934142042).

Almost surely, 2^864991648595 is an apocalyptic number.

864991648595 is a deficient number, since it is larger than the sum of its proper divisors (173954624077).

864991648595 is a wasteful number, since it uses less digits than its factorization.

864991648595 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35462.

The product of its digits is 671846400, while the sum is 74.

The spelling of 864991648595 in words is "eight hundred sixty-four billion, nine hundred ninety-one million, six hundred forty-eight thousand, five hundred ninety-five".