27806211249 has 16 divisors (see below), whose sum is σ = 37187164800. Its totient is φ = 18481433600.

The previous prime is 27806211233. The next prime is 27806211263. The reversal of 27806211249 is 94211260872.

It is a cyclic number.

It is not a de Polignac number, because 27806211249 - 2⁴ = 27806211233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27806211249.

It is not an unprimeable number, because it can be changed into a prime (27806211229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1833799 + ... + 1848899.

It is an arithmetic number, because the mean of its divisors is an integer number (2324197800).

Almost surely, 2^27806211249 is an apocalyptic number.

It is an amenable number.

27806211249 is a deficient number, since it is larger than the sum of its proper divisors (9380953551).

27806211249 is a wasteful number, since it uses less digits than its factorization.

27806211249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16920.

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 27806211249 in words is "twenty-seven billion, eight hundred six million, two hundred eleven thousand, two hundred forty-nine".