27556540279 has 2 divisors, whose sum is σ = 27556540280. Its totient is φ = 27556540278.

The previous prime is 27556540223. The next prime is 27556540379. The reversal of 27556540279 is 97204565572.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27556540279 - 2⁹ = 27556539767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27556540079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13778270139 + 13778270140.

It is an arithmetic number, because the mean of its divisors is an integer number (13778270140).

Almost surely, 2^27556540279 is an apocalyptic number.

27556540279 is a deficient number, since it is larger than the sum of its proper divisors (1).

27556540279 is an equidigital number, since it uses as much as digits as its factorization.

27556540279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292000, while the sum is 52.

It can be divided in two parts, 275565 and 40279, that added together give a square (315844 = 562²).

The spelling of 27556540279 in words is "twenty-seven billion, five hundred fifty-six million, five hundred forty thousand, two hundred seventy-nine".