6876855809213 has 16 divisors (see below), whose sum is σ = 7418239508400. Its totient is φ = 6337251578880.

The previous prime is 6876855809177. The next prime is 6876855809237. The reversal of 6876855809213 is 3129085586786.

It can be written as a sum of positive squares in 8 ways, for example, as 1254090899044 + 5622764910169 = 1119862^2 + 2371237^2 .

It is a cyclic number.

It is not a de Polignac number, because 6876855809213 - 2²⁰ = 6876854760637 is a prime.

It is a super-2 number, since 2×6876855809213² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6876855809413) 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, 18732023 + ... + 19095611.

It is an arithmetic number, because the mean of its divisors is an integer number (463639969275).

Almost surely, 2^{6876855809213} is an apocalyptic number.

It is an amenable number.

6876855809213 is a deficient number, since it is larger than the sum of its proper divisors (541383699187).

6876855809213 is a wasteful number, since it uses less digits than its factorization.

6876855809213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366032.

The product of its (nonzero) digits is 174182400, while the sum is 68.

The spelling of 6876855809213 in words is "six trillion, eight hundred seventy-six billion, eight hundred fifty-five million, eight hundred nine thousand, two hundred thirteen".