27029520018 has 30 divisors (see below), whose sum is σ = 60570835941. Its totient is φ = 9009142488.

The previous prime is 27029519999. The next prime is 27029520019. The reversal of 27029520018 is 81002592072.

It can be written as a sum of positive squares in 2 ways, for example, as 26969193729 + 60326289 = 164223^2 + 7767^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=116253.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27029520019) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 2086096 + ... + 2099012.

Almost surely, 2^27029520018 is an apocalyptic number.

27029520018 is an abundant number, since it is smaller than the sum of its proper divisors (33541315923).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27029520018 is an frugal number, since it uses more digits than its factorization.

27029520018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25848 (or 12922 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The spelling of 27029520018 in words is "twenty-seven billion, twenty-nine million, five hundred twenty thousand, eighteen".