27726883213 has 2 divisors, whose sum is σ = 27726883214. Its totient is φ = 27726883212.

The previous prime is 27726883199. The next prime is 27726883237. The reversal of 27726883213 is 31238862772.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21904888009 + 5821995204 = 148003^2 + 76302^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27726883213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27726883243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13863441606 + 13863441607.

It is an arithmetic number, because the mean of its divisors is an integer number (13863441607).

Almost surely, 2^27726883213 is an apocalyptic number.

It is an amenable number.

27726883213 is a deficient number, since it is larger than the sum of its proper divisors (1).

27726883213 is an equidigital number, since it uses as much as digits as its factorization.

27726883213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1354752, while the sum is 49.

The spelling of 27726883213 in words is "twenty-seven billion, seven hundred twenty-six million, eight hundred eighty-three thousand, two hundred thirteen".