6811128112013 has 4 divisors (see below), whose sum is σ = 6811325062620. Its totient is φ = 6810931161408.

The previous prime is 6811128112007. The next prime is 6811128112037. The reversal of 6811128112013 is 3102118211186.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2460891850729 + 4350236261284 = 1568723^2 + 2085722^2 .

It is a cyclic number.

It is not a de Polignac number, because 6811128112013 - 2²⁸ = 6810859676557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6811128112513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98423420 + ... + 98492597.

It is an arithmetic number, because the mean of its divisors is an integer number (1702831265655).

Almost surely, 2^{6811128112013} is an apocalyptic number.

It is an amenable number.

6811128112013 is a deficient number, since it is larger than the sum of its proper divisors (196950607).

6811128112013 is a wasteful number, since it uses less digits than its factorization.

6811128112013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196950606.

The product of its (nonzero) digits is 4608, while the sum is 35.

The spelling of 6811128112013 in words is "six trillion, eight hundred eleven billion, one hundred twenty-eight million, one hundred twelve thousand, thirteen".