27191321467 has 2 divisors, whose sum is σ = 27191321468. Its totient is φ = 27191321466.

The previous prime is 27191321461. The next prime is 27191321491. The reversal of 27191321467 is 76412319172.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27191321467 is a prime.

It is not a weakly prime, because it can be changed into another prime (27191321461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13595660733 + 13595660734.

It is an arithmetic number, because the mean of its divisors is an integer number (13595660734).

Almost surely, 2^27191321467 is an apocalyptic number.

27191321467 is a deficient number, since it is larger than the sum of its proper divisors (1).

27191321467 is an equidigital number, since it uses as much as digits as its factorization.

27191321467 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 43.

The spelling of 27191321467 in words is "twenty-seven billion, one hundred ninety-one million, three hundred twenty-one thousand, four hundred sixty-seven".