20317654271 has 4 divisors (see below), whose sum is σ = 20318751600. Its totient is φ = 20316556944.

The previous prime is 20317654219. The next prime is 20317654319. The reversal of 20317654271 is 17245671302.

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 20317654271 - 2¹⁰ = 20317653247 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 (20317654471) 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, 520406 + ... + 558083.

It is an arithmetic number, because the mean of its divisors is an integer number (5079687900).

Almost surely, 2^20317654271 is an apocalyptic number.

20317654271 is a deficient number, since it is larger than the sum of its proper divisors (1097329).

20317654271 is a wasteful number, since it uses less digits than its factorization.

20317654271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097328.

The product of its (nonzero) digits is 70560, while the sum is 38.

The spelling of 20317654271 in words is "twenty billion, three hundred seventeen million, six hundred fifty-four thousand, two hundred seventy-one".