6800639139845 has 16 divisors (see below), whose sum is σ = 8183544747840. Its totient is φ = 5425346367744.

The previous prime is 6800639139817. The next prime is 6800639139857. The reversal of 6800639139845 is 5489319360086.

It is a cyclic number.

It is not a de Polignac number, because 6800639139845 - 2²⁸ = 6800370704389 is a prime.

It is a congruent 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, 1424846 + ... + 3953664.

It is an arithmetic number, because the mean of its divisors is an integer number (511471546740).

Almost surely, 2^{6800639139845} is an apocalyptic number.

It is an amenable number.

6800639139845 is a deficient number, since it is larger than the sum of its proper divisors (1382905607995).

6800639139845 is a wasteful number, since it uses less digits than its factorization.

6800639139845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2530324.

The product of its (nonzero) digits is 33592320, while the sum is 62.

The spelling of 6800639139845 in words is "six trillion, eight hundred billion, six hundred thirty-nine million, one hundred thirty-nine thousand, eight hundred forty-five".