27357872018 has 8 divisors (see below), whose sum is σ = 41079871548. Its totient is φ = 13664581504.

The previous prime is 27357871999. The next prime is 27357872023. The reversal of 27357872018 is 81027875372.

It can be written as a sum of positive squares in 2 ways, for example, as 26054156569 + 1303715449 = 161413^2 + 36107^2 .

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

It is a super-2 number, since 2×27357872018² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7174871 + ... + 7178682.

Almost surely, 2^27357872018 is an apocalyptic number.

27357872018 is a deficient number, since it is larger than the sum of its proper divisors (13721999530).

27357872018 is a wasteful number, since it uses less digits than its factorization.

27357872018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14354508.

The product of its (nonzero) digits is 1317120, while the sum is 50.

The spelling of 27357872018 in words is "twenty-seven billion, three hundred fifty-seven million, eight hundred seventy-two thousand, eighteen".