27317428155 has 48 divisors (see below), whose sum is σ = 47981700000. Its totient is φ = 14375674368.

The previous prime is 27317428109. The next prime is 27317428199. The reversal of 27317428155 is 55182471372.

27317428155 is a `hidden beast` number, since 2 + 7 + 317 + 4 + 281 + 55 = 666.

It is not a de Polignac number, because 27317428155 - 2¹⁷ = 27317297083 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 27317428155.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1991661 + ... + 2005329.

It is an arithmetic number, because the mean of its divisors is an integer number (999618750).

Almost surely, 2^27317428155 is an apocalyptic number.

27317428155 is a deficient number, since it is larger than the sum of its proper divisors (20664271845).

27317428155 is a wasteful number, since it uses less digits than its factorization.

27317428155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14268 (or 14265 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The spelling of 27317428155 in words is "twenty-seven billion, three hundred seventeen million, four hundred twenty-eight thousand, one hundred fifty-five".