6812881158 has 32 divisors (see below), whose sum is σ = 14032166400. Its totient is φ = 2204201376.

The previous prime is 6812881157. The next prime is 6812881211. The reversal of 6812881158 is 8511882186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6812881157) 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, 93841 + ... + 149772.

It is an arithmetic number, because the mean of its divisors is an integer number (438505200).

Almost surely, 2^6812881158 is an apocalyptic number.

6812881158 is an abundant number, since it is smaller than the sum of its proper divisors (7219285242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6812881158 is a wasteful number, since it uses less digits than its factorization.

6812881158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243756.

The product of its digits is 245760, while the sum is 48.

The square root of 6812881158 is about 82540.1790523864. The cubic root of 6812881158 is about 1895.7319856742.

The spelling of 6812881158 in words is "six billion, eight hundred twelve million, eight hundred eighty-one thousand, one hundred fifty-eight".