18713208271 has 4 divisors (see below), whose sum is σ = 18816596344. Its totient is φ = 18609820200.

The previous prime is 18713208251. The next prime is 18713208323. The reversal of 18713208271 is 17280231781.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18713208271 - 2²⁷ = 18578990543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18713208211) 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, 51693765 + ... + 51694126.

It is an arithmetic number, because the mean of its divisors is an integer number (4704149086).

Almost surely, 2^18713208271 is an apocalyptic number.

18713208271 is a deficient number, since it is larger than the sum of its proper divisors (103388073).

18713208271 is a wasteful number, since it uses less digits than its factorization.

18713208271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103388072.

The product of its (nonzero) digits is 37632, while the sum is 40.

The spelling of 18713208271 in words is "eighteen billion, seven hundred thirteen million, two hundred eight thousand, two hundred seventy-one".