6942778171 has 4 divisors (see below), whose sum is σ = 7934603632. Its totient is φ = 5950952712.

The previous prime is 6942778133. The next prime is 6942778207. The reversal of 6942778171 is 1718772496.

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

It is a cyclic number.

It is not a de Polignac number, because 6942778171 - 2⁷ = 6942778043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6942778471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 495912720 + ... + 495912733.

It is an arithmetic number, because the mean of its divisors is an integer number (1983650908).

Almost surely, 2^6942778171 is an apocalyptic number.

6942778171 is a deficient number, since it is larger than the sum of its proper divisors (991825461).

6942778171 is an equidigital number, since it uses as much as digits as its factorization.

6942778171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991825460.

The product of its digits is 1185408, while the sum is 52.

The square root of 6942778171 is about 83323.3350928778. The cubic root of 6942778171 is about 1907.7044661606.

The spelling of 6942778171 in words is "six billion, nine hundred forty-two million, seven hundred seventy-eight thousand, one hundred seventy-one".