27133437491 has 2 divisors, whose sum is σ = 27133437492. Its totient is φ = 27133437490.

The previous prime is 27133437481. The next prime is 27133437517. The reversal of 27133437491 is 19473433172.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27133437491 - 2⁶ = 27133437427 is a prime.

It is not a weakly prime, because it can be changed into another prime (27133437421) 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, 13566718745 + 13566718746.

It is an arithmetic number, because the mean of its divisors is an integer number (13566718746).

Almost surely, 2^27133437491 is an apocalyptic number.

27133437491 is a deficient number, since it is larger than the sum of its proper divisors (1).

27133437491 is an equidigital number, since it uses as much as digits as its factorization.

27133437491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 44.

The spelling of 27133437491 in words is "twenty-seven billion, one hundred thirty-three million, four hundred thirty-seven thousand, four hundred ninety-one".