27647851939247 has 2 divisors, whose sum is σ = 27647851939248. Its totient is φ = 27647851939246.

The previous prime is 27647851939243. The next prime is 27647851939343. The reversal of 27647851939247 is 74293915874672.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27647851939247 - 2² = 27647851939243 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27647851939243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13823925969623 + 13823925969624.

It is an arithmetic number, because the mean of its divisors is an integer number (13823925969624).

Almost surely, 2^{27647851939247} is an apocalyptic number.

27647851939247 is a deficient number, since it is larger than the sum of its proper divisors (1).

27647851939247 is an equidigital number, since it uses as much as digits as its factorization.

27647851939247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1280240640, while the sum is 74.

The spelling of 27647851939247 in words is "twenty-seven trillion, six hundred forty-seven billion, eight hundred fifty-one million, nine hundred thirty-nine thousand, two hundred forty-seven".