27018376164 has 72 divisors (see below), whose sum is σ = 73718124480. Its totient is φ = 8294346432.

The previous prime is 27018376157. The next prime is 27018376169. The reversal of 27018376164 is 46167381072.

27018376164 is a `hidden beast` number, since 27 + 0 + 1 + 8 + 3 + 7 + 616 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (27018376169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139699 + ... + 271205.

It is an arithmetic number, because the mean of its divisors is an integer number (1023862840).

Almost surely, 2^27018376164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27018376164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36859062240).

27018376164 is an abundant number, since it is smaller than the sum of its proper divisors (46699748316).

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

27018376164 is a wasteful number, since it uses less digits than its factorization.

27018376164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131969 (or 131964 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 27018376164 in words is "twenty-seven billion, eighteen million, three hundred seventy-six thousand, one hundred sixty-four".