6813872178 has 16 divisors (see below), whose sum is σ = 13884872256. Its totient is φ = 2228436080.

The previous prime is 6813872171. The next prime is 6813872183. The reversal of 6813872178 is 8712783186.

It is a self number, because there is not a number n which added to its sum of digits gives 6813872178.

It is not an unprimeable number, because it can be changed into a prime (6813872171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10713318 + ... + 10713953.

It is an arithmetic number, because the mean of its divisors is an integer number (867804516).

Almost surely, 2^6813872178 is an apocalyptic number.

6813872178 is an abundant number, since it is smaller than the sum of its proper divisors (7071000078).

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

6813872178 is a wasteful number, since it uses less digits than its factorization.

6813872178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21427329.

The product of its digits is 903168, while the sum is 51.

The square root of 6813872178 is about 82546.1820922082. The cubic root of 6813872178 is about 1895.8239006405.

The spelling of 6813872178 in words is "six billion, eight hundred thirteen million, eight hundred seventy-two thousand, one hundred seventy-eight".