27987508259 has 2 divisors, whose sum is σ = 27987508260. Its totient is φ = 27987508258.

The previous prime is 27987508223. The next prime is 27987508277. The reversal of 27987508259 is 95280578972.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27987508259 - 2¹² = 27987504163 is a prime.

It is a super-2 number, since 2×27987508259² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27987507259) 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, 13993754129 + 13993754130.

It is an arithmetic number, because the mean of its divisors is an integer number (13993754130).

Almost surely, 2^27987508259 is an apocalyptic number.

27987508259 is a deficient number, since it is larger than the sum of its proper divisors (1).

27987508259 is an equidigital number, since it uses as much as digits as its factorization.

27987508259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25401600, while the sum is 62.

The spelling of 27987508259 in words is "twenty-seven billion, nine hundred eighty-seven million, five hundred eight thousand, two hundred fifty-nine".