6812178361 has 4 divisors (see below), whose sum is σ = 6841415412. Its totient is φ = 6782941312.

The previous prime is 6812178353. The next prime is 6812178377. The reversal of 6812178361 is 1638712186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1638712186 = 2 ⋅819356093.

It can be written as a sum of positive squares in 2 ways, for example, as 4599416761 + 2212761600 = 67819^2 + 47040^2 .

It is a cyclic number.

It is not a de Polignac number, because 6812178361 - 2³ = 6812178353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6812178311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14618176 + ... + 14618641.

It is an arithmetic number, because the mean of its divisors is an integer number (1710353853).

Almost surely, 2^6812178361 is an apocalyptic number.

It is an amenable number.

6812178361 is a deficient number, since it is larger than the sum of its proper divisors (29237051).

6812178361 is a wasteful number, since it uses less digits than its factorization.

6812178361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29237050.

The product of its digits is 96768, while the sum is 43.

The square root of 6812178361 is about 82535.9216402168. The cubic root of 6812178361 is about 1895.6667973671. Note that the first 3 decimals are identical.

The spelling of 6812178361 in words is "six billion, eight hundred twelve million, one hundred seventy-eight thousand, three hundred sixty-one".