27140136637 has 2 divisors, whose sum is σ = 27140136638. Its totient is φ = 27140136636.

The previous prime is 27140136613. The next prime is 27140136677. The reversal of 27140136637 is 73663104172.

It is an a-pointer prime, because the next prime (27140136677) can be obtained adding 27140136637 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19306824601 + 7833312036 = 138949^2 + 88506^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27140136637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27140136637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27140136677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13570068318 + 13570068319.

It is an arithmetic number, because the mean of its divisors is an integer number (13570068319).

Almost surely, 2^27140136637 is an apocalyptic number.

It is an amenable number.

27140136637 is a deficient number, since it is larger than the sum of its proper divisors (1).

27140136637 is an equidigital number, since it uses as much as digits as its factorization.

27140136637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 40.

The spelling of 27140136637 in words is "twenty-seven billion, one hundred forty million, one hundred thirty-six thousand, six hundred thirty-seven".