6865385329 has 16 divisors (see below), whose sum is σ = 7586568000. Its totient is φ = 6160619520.

The previous prime is 6865385327. The next prime is 6865385341. The reversal of 6865385329 is 9235835686.

It is not a de Polignac number, because 6865385329 - 2¹ = 6865385327 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6865385329.

It is not an unprimeable number, because it can be changed into a prime (6865385321) 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, 600337 + ... + 611665.

It is an arithmetic number, because the mean of its divisors is an integer number (474160500).

Almost surely, 2^6865385329 is an apocalyptic number.

It is an amenable number.

6865385329 is a deficient number, since it is larger than the sum of its proper divisors (721182671).

6865385329 is a wasteful number, since it uses less digits than its factorization.

6865385329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12048.

The product of its digits is 9331200, while the sum is 55.

The square root of 6865385329 is about 82857.6208263308. The cubic root of 6865385329 is about 1900.5894135335.

The spelling of 6865385329 in words is "six billion, eight hundred sixty-five million, three hundred eighty-five thousand, three hundred twenty-nine".