27945858547 has 2 divisors, whose sum is σ = 27945858548. Its totient is φ = 27945858546.

The previous prime is 27945858469. The next prime is 27945858557. The reversal of 27945858547 is 74585854972.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27945858547 - 2¹⁵ = 27945825779 is a prime.

It is not a weakly prime, because it can be changed into another prime (27945858557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13972929273 + 13972929274.

It is an arithmetic number, because the mean of its divisors is an integer number (13972929274).

Almost surely, 2^27945858547 is an apocalyptic number.

27945858547 is a deficient number, since it is larger than the sum of its proper divisors (1).

27945858547 is an equidigital number, since it uses as much as digits as its factorization.

27945858547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896000, while the sum is 64.

The spelling of 27945858547 in words is "twenty-seven billion, nine hundred forty-five million, eight hundred fifty-eight thousand, five hundred forty-seven".