27608422157 has 2 divisors, whose sum is σ = 27608422158. Its totient is φ = 27608422156.

The previous prime is 27608422151. The next prime is 27608422187. The reversal of 27608422157 is 75122480672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27432965641 + 175456516 = 165629^2 + 13246^2 .

It is a cyclic number.

It is not a de Polignac number, because 27608422157 - 2²⁰ = 27607373581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27608422151) 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, 13804211078 + 13804211079.

It is an arithmetic number, because the mean of its divisors is an integer number (13804211079).

Almost surely, 2^27608422157 is an apocalyptic number.

It is an amenable number.

27608422157 is a deficient number, since it is larger than the sum of its proper divisors (1).

27608422157 is an equidigital number, since it uses as much as digits as its factorization.

27608422157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 376320, while the sum is 44.

The spelling of 27608422157 in words is "twenty-seven billion, six hundred eight million, four hundred twenty-two thousand, one hundred fifty-seven".