6864089211639 has 20 divisors (see below), whose sum is σ = 11185923161160. Its totient is φ = 4160054067120.

The previous prime is 6864089211527. The next prime is 6864089211737. The reversal of 6864089211639 is 9361129804686.

6864089211639 is a `hidden beast` number, since 6 + 8 + 6 + 408 + 9 + 211 + 6 + 3 + 9 = 666.

It is not a de Polignac number, because 6864089211639 - 2¹² = 6864089207543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6864089212639) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3851901024 + ... + 3851902805.

It is an arithmetic number, because the mean of its divisors is an integer number (559296158058).

Almost surely, 2^{6864089211639} is an apocalyptic number.

6864089211639 is a deficient number, since it is larger than the sum of its proper divisors (4321833949521).

6864089211639 is a wasteful number, since it uses less digits than its factorization.

6864089211639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7703803852 (or 7703803843 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 63.

The spelling of 6864089211639 in words is "six trillion, eight hundred sixty-four billion, eighty-nine million, two hundred eleven thousand, six hundred thirty-nine".