27133437517 has 2 divisors, whose sum is σ = 27133437518. Its totient is φ = 27133437516.

The previous prime is 27133437491. The next prime is 27133437553. The reversal of 27133437517 is 71573433172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24394066596 + 2739370921 = 156186^2 + 52339^2 .

It is a cyclic number.

It is not a de Polignac number, because 27133437517 - 2¹⁹ = 27132913229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27133437557) 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, 13566718758 + 13566718759.

It is an arithmetic number, because the mean of its divisors is an integer number (13566718759).

Almost surely, 2^27133437517 is an apocalyptic number.

It is an amenable number.

27133437517 is a deficient number, since it is larger than the sum of its proper divisors (1).

27133437517 is an equidigital number, since it uses as much as digits as its factorization.

27133437517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 370440, while the sum is 43.

The spelling of 27133437517 in words is "twenty-seven billion, one hundred thirty-three million, four hundred thirty-seven thousand, five hundred seventeen".