27686951113 has 4 divisors (see below), whose sum is σ = 27754645780. Its totient is φ = 27619256448.

The previous prime is 27686951087. The next prime is 27686951143. The reversal of 27686951113 is 31115968672.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26165327049 + 1521624064 = 161757^2 + 39008^2 .

It is a cyclic number.

It is not a de Polignac number, because 27686951113 - 2²⁹ = 27150080201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27686951143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33846720 + ... + 33847537.

It is an arithmetic number, because the mean of its divisors is an integer number (6938661445).

Almost surely, 2^27686951113 is an apocalyptic number.

It is an amenable number.

27686951113 is a deficient number, since it is larger than the sum of its proper divisors (67694667).

27686951113 is an equidigital number, since it uses as much as digits as its factorization.

27686951113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67694666.

The product of its digits is 544320, while the sum is 49.

The spelling of 27686951113 in words is "twenty-seven billion, six hundred eighty-six million, nine hundred fifty-one thousand, one hundred thirteen".