27726866013 has 48 divisors (see below), whose sum is σ = 46521433728. Its totient is φ = 14378496000.

The previous prime is 27726865997. The next prime is 27726866017. The reversal of 27726866013 is 31066862772.

It is not a de Polignac number, because 27726866013 - 2⁴ = 27726865997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27726866017) 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 47 ways as a sum of consecutive naturals, for example, 1497613 + ... + 1516013.

It is an arithmetic number, because the mean of its divisors is an integer number (969196536).

Almost surely, 2^27726866013 is an apocalyptic number.

It is an amenable number.

27726866013 is a deficient number, since it is larger than the sum of its proper divisors (18794567715).

27726866013 is a wasteful number, since it uses less digits than its factorization.

27726866013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19026 (or 19015 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 27726866013 in words is "twenty-seven billion, seven hundred twenty-six million, eight hundred sixty-six thousand, thirteen".