27998539828499 has 2 divisors, whose sum is σ = 27998539828500. Its totient is φ = 27998539828498.

The previous prime is 27998539828481. The next prime is 27998539828541. The reversal of 27998539828499 is 99482893589972.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27998539828499 - 2²⁰ = 27998538779923 is a prime.

It is not a weakly prime, because it can be changed into another prime (27998539828799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13999269914249 + 13999269914250.

It is an arithmetic number, because the mean of its divisors is an integer number (13999269914250).

Almost surely, 2^{27998539828499} is an apocalyptic number.

27998539828499 is a deficient number, since it is larger than the sum of its proper divisors (1).

27998539828499 is an equidigital number, since it uses as much as digits as its factorization.

27998539828499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50791587840, while the sum is 92.

The spelling of 27998539828499 in words is "twenty-seven trillion, nine hundred ninety-eight billion, five hundred thirty-nine million, eight hundred twenty-eight thousand, four hundred ninety-nine".