27255328140 has 96 divisors (see below), whose sum is σ = 77175495936. Its totient is φ = 7186533120.

The previous prime is 27255328127. The next prime is 27255328157. The reversal of 27255328140 is 4182355272.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2218254 + ... + 2230506.

It is an arithmetic number, because the mean of its divisors is an integer number (803911416).

Almost surely, 2^27255328140 is an apocalyptic number.

27255328140 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 27255328140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38587747968).

27255328140 is an abundant number, since it is smaller than the sum of its proper divisors (49920167796).

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

27255328140 is a wasteful number, since it uses less digits than its factorization.

27255328140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12679 (or 12677 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 39.

The spelling of 27255328140 in words is "twenty-seven billion, two hundred fifty-five million, three hundred twenty-eight thousand, one hundred forty".