27756252679 has 2 divisors, whose sum is σ = 27756252680. Its totient is φ = 27756252678.

The previous prime is 27756252677. The next prime is 27756252737. The reversal of 27756252679 is 97625265772.

It is a happy number.

It is an a-pointer prime, because the next prime (27756252737) can be obtained adding 27756252679 to its sum of digits (58).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27756252679 - 2¹ = 27756252677 is a prime.

Together with 27756252677, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27756252673) 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 as a sum of consecutive naturals, namely, 13878126339 + 13878126340.

It is an arithmetic number, because the mean of its divisors is an integer number (13878126340).

Almost surely, 2^27756252679 is an apocalyptic number.

27756252679 is a deficient number, since it is larger than the sum of its proper divisors (1).

27756252679 is an equidigital number, since it uses as much as digits as its factorization.

27756252679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22226400, while the sum is 58.

The spelling of 27756252679 in words is "twenty-seven billion, seven hundred fifty-six million, two hundred fifty-two thousand, six hundred seventy-nine".