27379481217 has 16 divisors (see below), whose sum is σ = 39829782720. Its totient is φ = 16591507200.

The previous prime is 27379481159. The next prime is 27379481219. The reversal of 27379481217 is 71218497372.

It is not a de Polignac number, because 27379481217 - 2¹² = 27379477121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27379481217.

It is not an unprimeable number, because it can be changed into a prime (27379481219) 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, 232509 + ... + 329877.

It is an arithmetic number, because the mean of its divisors is an integer number (2489361420).

Almost surely, 2^27379481217 is an apocalyptic number.

It is an amenable number.

27379481217 is a deficient number, since it is larger than the sum of its proper divisors (12450301503).

27379481217 is a wasteful number, since it uses less digits than its factorization.

27379481217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105904.

The product of its digits is 1185408, while the sum is 51.

The spelling of 27379481217 in words is "twenty-seven billion, three hundred seventy-nine million, four hundred eighty-one thousand, two hundred seventeen".