6365399039985 has 16 divisors (see below), whose sum is σ = 10184683801536. Its totient is φ = 3394864375488.

The previous prime is 6365399039983. The next prime is 6365399040001. The reversal of 6365399039985 is 5899309935636.

It is not a de Polignac number, because 6365399039985 - 2¹ = 6365399039983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6365399039981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3094567 + ... + 4723043.

It is an arithmetic number, because the mean of its divisors is an integer number (636542737596).

Almost surely, 2^{6365399039985} is an apocalyptic number.

It is an amenable number.

6365399039985 is a deficient number, since it is larger than the sum of its proper divisors (3819284761551).

6365399039985 is a wasteful number, since it uses less digits than its factorization.

6365399039985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889072.

The product of its (nonzero) digits is 1275458400, while the sum is 75.

The spelling of 6365399039985 in words is "six trillion, three hundred sixty-five billion, three hundred ninety-nine million, thirty-nine thousand, nine hundred eighty-five".