27017245109 has 4 divisors (see below), whose sum is σ = 27397769760. Its totient is φ = 26636720460.

The previous prime is 27017245097. The next prime is 27017245117. The reversal of 27017245109 is 90154271072.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27017245109 - 2¹⁶ = 27017179573 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27017245169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190262219 + ... + 190262360.

It is an arithmetic number, because the mean of its divisors is an integer number (6849442440).

Almost surely, 2^27017245109 is an apocalyptic number.

It is an amenable number.

27017245109 is a deficient number, since it is larger than the sum of its proper divisors (380524651).

27017245109 is an equidigital number, since it uses as much as digits as its factorization.

27017245109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380524650.

The product of its (nonzero) digits is 35280, while the sum is 38.

The spelling of 27017245109 in words is "twenty-seven billion, seventeen million, two hundred forty-five thousand, one hundred nine".