27981642482 has 8 divisors (see below), whose sum is σ = 41973791196. Its totient is φ = 13990378752.

The previous prime is 27981642461. The next prime is 27981642529. The reversal of 27981642482 is 28424618972.

It can be written as a sum of positive squares in 2 ways, for example, as 20635609801 + 7346032681 = 143651^2 + 85709^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135563 + ... + 272654.

Almost surely, 2^27981642482 is an apocalyptic number.

27981642482 is a deficient number, since it is larger than the sum of its proper divisors (13992148714).

27981642482 is a wasteful number, since it uses less digits than its factorization.

27981642482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442492.

The product of its digits is 3096576, while the sum is 53.

The spelling of 27981642482 in words is "twenty-seven billion, nine hundred eighty-one million, six hundred forty-two thousand, four hundred eighty-two".