20338367165 has 8 divisors (see below), whose sum is σ = 24507311928. Its totient is φ = 16203179520.

The previous prime is 20338367143. The next prime is 20338367167. The reversal of 20338367165 is 56176383302.

It can be written as a sum of positive squares in 4 ways, for example, as 6558894169 + 13779472996 = 80987^2 + 117386^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-20338367165 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 (20338367167) 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, 8437952 + ... + 8440361.

It is an arithmetic number, because the mean of its divisors is an integer number (3063413991).

Almost surely, 2^20338367165 is an apocalyptic number.

It is an amenable number.

20338367165 is a deficient number, since it is larger than the sum of its proper divisors (4168944763).

20338367165 is a wasteful number, since it uses less digits than its factorization.

20338367165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16878559.

The product of its (nonzero) digits is 544320, while the sum is 44.

The spelling of 20338367165 in words is "twenty billion, three hundred thirty-eight million, three hundred sixty-seven thousand, one hundred sixty-five".