27726680629 has 2 divisors, whose sum is σ = 27726680630. Its totient is φ = 27726680628.

The previous prime is 27726680627. The next prime is 27726680701. The reversal of 27726680629 is 92608662772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20998908100 + 6727772529 = 144910^2 + 82023^2 .

It is a cyclic number.

It is not a de Polignac number, because 27726680629 - 2¹ = 27726680627 is a prime.

Together with 27726680627, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 27726680629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27726680627) 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 as a sum of consecutive naturals, namely, 13863340314 + 13863340315.

It is an arithmetic number, because the mean of its divisors is an integer number (13863340315).

Almost surely, 2^27726680629 is an apocalyptic number.

It is an amenable number.

27726680629 is a deficient number, since it is larger than the sum of its proper divisors (1).

27726680629 is an equidigital number, since it uses as much as digits as its factorization.

27726680629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 27726680629 in words is "twenty-seven billion, seven hundred twenty-six million, six hundred eighty thousand, six hundred twenty-nine".