27984086987 has 8 divisors (see below), whose sum is σ = 28929626880. Its totient is φ = 27051071040.

The previous prime is 27984086983. The next prime is 27984086989. The reversal of 27984086987 is 78968048972.

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 27984086987 - 2² = 27984086983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27984086983) 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, 3126443 + ... + 3135380.

It is an arithmetic number, because the mean of its divisors is an integer number (3616203360).

Almost surely, 2^27984086987 is an apocalyptic number.

27984086987 is a deficient number, since it is larger than the sum of its proper divisors (945539893).

27984086987 is a wasteful number, since it uses less digits than its factorization.

27984086987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6261973.

The product of its (nonzero) digits is 97542144, while the sum is 68.

The spelling of 27984086987 in words is "twenty-seven billion, nine hundred eighty-four million, eighty-six thousand, nine hundred eighty-seven".