6856167742 has 4 divisors (see below), whose sum is σ = 10284251616. Its totient is φ = 3428083870.

The previous prime is 6856167739. The next prime is 6856167757. The reversal of 6856167742 is 2477616586.

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

It is a super-2 number, since 2×6856167742² = 94014072212882757128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6856167742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1714041934 + ... + 1714041937.

It is an arithmetic number, because the mean of its divisors is an integer number (2571062904).

Almost surely, 2^6856167742 is an apocalyptic number.

6856167742 is a deficient number, since it is larger than the sum of its proper divisors (3428083874).

6856167742 is a wasteful number, since it uses less digits than its factorization.

6856167742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3428083873.

The product of its digits is 3386880, while the sum is 52.

The square root of 6856167742 is about 82801.9790947052. The cubic root of 6856167742 is about 1899.7384443281.

The spelling of 6856167742 in words is "six billion, eight hundred fifty-six million, one hundred sixty-seven thousand, seven hundred forty-two".