20469171317 has 32 divisors (see below), whose sum is σ = 25090083072. Its totient is φ = 16300376064.

The previous prime is 20469171299. The next prime is 20469171377. The reversal of 20469171317 is 71317196402.

It is not a de Polignac number, because 20469171317 - 2¹⁶ = 20469105781 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 (20469171377) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3452918 + ... + 3458840.

It is an arithmetic number, because the mean of its divisors is an integer number (784065096).

Almost surely, 2^20469171317 is an apocalyptic number.

It is an amenable number.

20469171317 is a deficient number, since it is larger than the sum of its proper divisors (4620911755).

20469171317 is a wasteful number, since it uses less digits than its factorization.

20469171317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6317.

The product of its (nonzero) digits is 63504, while the sum is 41.

The spelling of 20469171317 in words is "twenty billion, four hundred sixty-nine million, one hundred seventy-one thousand, three hundred seventeen".