27109928817 has 12 divisors (see below), whose sum is σ = 39161216640. Its totient is φ = 18072164088.

The previous prime is 27109928809. The next prime is 27109928827. The reversal of 27109928817 is 71882990172.

27109928817 is a `hidden beast` number, since 271 + 0 + 99 + 288 + 1 + 7 = 666.

It is not a de Polignac number, because 27109928817 - 2³ = 27109928809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27109928827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75684 + ... + 244842.

It is an arithmetic number, because the mean of its divisors is an integer number (3263434720).

Almost surely, 2^27109928817 is an apocalyptic number.

It is an amenable number.

27109928817 is a deficient number, since it is larger than the sum of its proper divisors (12051287823).

27109928817 is a wasteful number, since it uses less digits than its factorization.

27109928817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186972 (or 186969 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 54.

The spelling of 27109928817 in words is "twenty-seven billion, one hundred nine million, nine hundred twenty-eight thousand, eight hundred seventeen".