27189321992 has 64 divisors (see below), whose sum is σ = 59370071040. Its totient is φ = 11432520000.

The previous prime is 27189321953. The next prime is 27189322001. The reversal of 27189321992 is 29912398172.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 927317 + ... + 956187.

It is an arithmetic number, because the mean of its divisors is an integer number (927657360).

Almost surely, 2^27189321992 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 27189321992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29685035520).

27189321992 is an abundant number, since it is smaller than the sum of its proper divisors (32180749048).

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

27189321992 is a wasteful number, since it uses less digits than its factorization.

27189321992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29202 (or 29198 counting only the distinct ones).

The product of its digits is 979776, while the sum is 53.

The spelling of 27189321992 in words is "twenty-seven billion, one hundred eighty-nine million, three hundred twenty-one thousand, nine hundred ninety-two".