27754427191 has 2 divisors, whose sum is σ = 27754427192. Its totient is φ = 27754427190.

The previous prime is 27754427153. The next prime is 27754427203. The reversal of 27754427191 is 19172445772.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27754427191 - 2¹¹ = 27754425143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27754427101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13877213595 + 13877213596.

It is an arithmetic number, because the mean of its divisors is an integer number (13877213596).

Almost surely, 2^27754427191 is an apocalyptic number.

27754427191 is a deficient number, since it is larger than the sum of its proper divisors (1).

27754427191 is an equidigital number, since it uses as much as digits as its factorization.

27754427191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 987840, while the sum is 49.

The spelling of 27754427191 in words is "twenty-seven billion, seven hundred fifty-four million, four hundred twenty-seven thousand, one hundred ninety-one".