27108197072 has 80 divisors (see below), whose sum is σ = 60509127168. Its totient is φ = 11644026240.

The previous prime is 27108197071. The next prime is 27108197147. The reversal of 27108197072 is 27079180172.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27108197071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295643 + ... + 376325.

Almost surely, 2^27108197072 is an apocalyptic number.

27108197072 is a gapful number since it is divisible by the number (22) 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 27108197072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30254563584).

27108197072 is an abundant number, since it is smaller than the sum of its proper divisors (33400930096).

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

27108197072 is a wasteful number, since it uses less digits than its factorization.

27108197072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80808 (or 80802 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 44.

The spelling of 27108197072 in words is "twenty-seven billion, one hundred eight million, one hundred ninety-seven thousand, seventy-two".