27017666018 has 32 divisors (see below), whose sum is σ = 48956096640. Its totient is φ = 10924035840.

The previous prime is 27017665991. The next prime is 27017666021. The reversal of 27017666018 is 81066671072.

It is a self number, because there is not a number n which added to its sum of digits gives 27017666018.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146621 + ... + 274832.

It is an arithmetic number, because the mean of its divisors is an integer number (1529878020).

Almost surely, 2^27017666018 is an apocalyptic number.

27017666018 is a deficient number, since it is larger than the sum of its proper divisors (21938430622).

27017666018 is a wasteful number, since it uses less digits than its factorization.

27017666018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421722.

The product of its (nonzero) digits is 169344, while the sum is 44.

The spelling of 27017666018 in words is "twenty-seven billion, seventeen million, six hundred sixty-six thousand, eighteen".