27984086986 has 8 divisors (see below), whose sum is σ = 42139462500. Its totient is φ = 13937599488.

The previous prime is 27984086983. The next prime is 27984086989. The reversal of 27984086986 is 68968048972.

It is an interprime number because it is at equal distance from previous prime (27984086983) and next prime (27984086989).

It can be written as a sum of positive squares in 2 ways, for example, as 27899354961 + 84732025 = 167031^2 + 9205^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 27221361 + ... + 27222388.

Almost surely, 2^27984086986 is an apocalyptic number.

27984086986 is a deficient number, since it is larger than the sum of its proper divisors (14155375514).

27984086986 is a wasteful number, since it uses less digits than its factorization.

27984086986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54444008.

The product of its (nonzero) digits is 83607552, while the sum is 67.

The spelling of 27984086986 in words is "twenty-seven billion, nine hundred eighty-four million, eighty-six thousand, nine hundred eighty-six".