27429236137 has 2 divisors, whose sum is σ = 27429236138. Its totient is φ = 27429236136.

The previous prime is 27429236129. The next prime is 27429236147. The reversal of 27429236137 is 73163292472.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23671668736 + 3757567401 = 153856^2 + 61299^2 .

It is a cyclic number.

It is not a de Polignac number, because 27429236137 - 2³ = 27429236129 is a prime.

It is not a weakly prime, because it can be changed into another prime (27429236147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13714618068 + 13714618069.

It is an arithmetic number, because the mean of its divisors is an integer number (13714618069).

Almost surely, 2^27429236137 is an apocalyptic number.

It is an amenable number.

27429236137 is a deficient number, since it is larger than the sum of its proper divisors (1).

27429236137 is an equidigital number, since it uses as much as digits as its factorization.

27429236137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 46.

The spelling of 27429236137 in words is "twenty-seven billion, four hundred twenty-nine million, two hundred thirty-six thousand, one hundred thirty-seven".