865336341099 has 16 divisors (see below), whose sum is σ = 1155643408800. Its totient is φ = 575960540160.

The previous prime is 865336341091. The next prime is 865336341169. The reversal of 865336341099 is 990143633568.

It is a happy number.

It is not a de Polignac number, because 865336341099 - 2³ = 865336341091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (865336341091) by changing a digit.

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, 7819119 + ... + 7929015.

It is an arithmetic number, because the mean of its divisors is an integer number (72227713050).

Almost surely, 2^865336341099 is an apocalyptic number.

865336341099 is a deficient number, since it is larger than the sum of its proper divisors (290307067701).

865336341099 is a wasteful number, since it uses less digits than its factorization.

865336341099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114110.

The product of its (nonzero) digits is 12597120, while the sum is 57.

The spelling of 865336341099 in words is "eight hundred sixty-five billion, three hundred thirty-six million, three hundred forty-one thousand, ninety-nine".