20338552171 has 8 divisors (see below), whose sum is σ = 24254671104. Its totient is φ = 16675086120.

The previous prime is 20338552159. The next prime is 20338552177. The reversal of 20338552171 is 17125583302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20338552171 - 2¹⁷ = 20338421099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20338552171.

It is not an unprimeable number, because it can be changed into a prime (20338552177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63163045 + ... + 63163366.

It is an arithmetic number, because the mean of its divisors is an integer number (3031833888).

Almost surely, 2^20338552171 is an apocalyptic number.

20338552171 is a deficient number, since it is larger than the sum of its proper divisors (3916118933).

20338552171 is a wasteful number, since it uses less digits than its factorization.

20338552171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126326441.

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 20338552171 in words is "twenty billion, three hundred thirty-eight million, five hundred fifty-two thousand, one hundred seventy-one".