27199134257 has 2 divisors, whose sum is σ = 27199134258. Its totient is φ = 27199134256.

The previous prime is 27199134097. The next prime is 27199134317. The reversal of 27199134257 is 75243199172.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27122466721 + 76667536 = 164689^2 + 8756^2 .

It is a cyclic number.

It is not a de Polignac number, because 27199134257 - 2²² = 27194939953 is a prime.

It is not a weakly prime, because it can be changed into another prime (27199131257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13599567128 + 13599567129.

It is an arithmetic number, because the mean of its divisors is an integer number (13599567129).

Almost surely, 2^27199134257 is an apocalyptic number.

It is an amenable number.

27199134257 is a deficient number, since it is larger than the sum of its proper divisors (1).

27199134257 is an equidigital number, since it uses as much as digits as its factorization.

27199134257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 50.

The spelling of 27199134257 in words is "twenty-seven billion, one hundred ninety-nine million, one hundred thirty-four thousand, two hundred fifty-seven".