27726680686 has 4 divisors (see below), whose sum is σ = 41590021032. Its totient is φ = 13863340342.

The previous prime is 27726680629. The next prime is 27726680701. The reversal of 27726680686 is 68608662772.

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

It is a self number, because there is not a number n which added to its sum of digits gives 27726680686.

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, 6931670170 + ... + 6931670173.

It is an arithmetic number, because the mean of its divisors is an integer number (10397505258).

Almost surely, 2^27726680686 is an apocalyptic number.

27726680686 is a deficient number, since it is larger than the sum of its proper divisors (13863340346).

27726680686 is a wasteful number, since it uses less digits than its factorization.

27726680686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13863340345.

The product of its (nonzero) digits is 16257024, while the sum is 58.

The spelling of 27726680686 in words is "twenty-seven billion, seven hundred twenty-six million, six hundred eighty thousand, six hundred eighty-six".