27998539828489 has 8 divisors (see below), whose sum is σ = 28688742304992. Its totient is φ = 27308685507360.

The previous prime is 27998539828481. The next prime is 27998539828499. The reversal of 27998539828489 is 98482893589972.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27998539828489 - 2³ = 27998539828481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27998539828481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86876019 + ... + 87197704.

It is an arithmetic number, because the mean of its divisors is an integer number (3586092788124).

Almost surely, 2^{27998539828489} is an apocalyptic number.

It is an amenable number.

27998539828489 is a deficient number, since it is larger than the sum of its proper divisors (690202476503).

27998539828489 is a wasteful number, since it uses less digits than its factorization.

27998539828489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174077687.

The product of its digits is 45148078080, while the sum is 91.

The spelling of 27998539828489 in words is "twenty-seven trillion, nine hundred ninety-eight billion, five hundred thirty-nine million, eight hundred twenty-eight thousand, four hundred eighty-nine".