6861270721686 has 8 divisors (see below), whose sum is σ = 13722541443384. Its totient is φ = 2287090240560.

The previous prime is 6861270721663. The next prime is 6861270721757.

6861270721686 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

6861270721686 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 571772560135 + ... + 571772560146.

It is an arithmetic number, because the mean of its divisors is an integer number (1715317680423).

Almost surely, 2^{6861270721686} is an apocalyptic number.

6861270721686 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6861270721686 is a wasteful number, since it uses less digits than its factorization.

6861270721686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143545120286.

The product of its (nonzero) digits is 16257024, while the sum is 60.

The spelling of 6861270721686 in words is "six trillion, eight hundred sixty-one billion, two hundred seventy million, seven hundred twenty-one thousand, six hundred eighty-six".