27840818180 has 192 divisors, whose sum is σ = 71616921600. Its totient is φ = 8904235392.

The previous prime is 27840818167. The next prime is 27840818209. The reversal of 27840818180 is 8181804872.

It is a super-2 number, since 2×27840818180² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 75860357 + ... + 75860723.

It is an arithmetic number, because the mean of its divisors is an integer number (373004800).

Almost surely, 2^27840818180 is an apocalyptic number.

27840818180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27840818180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35808460800).

27840818180 is an abundant number, since it is smaller than the sum of its proper divisors (43776103420).

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

27840818180 is a wasteful number, since it uses less digits than its factorization.

27840818180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 47.

The spelling of 27840818180 in words is "twenty-seven billion, eight hundred forty million, eight hundred eighteen thousand, one hundred eighty".