20168500038 has 64 divisors (see below), whose sum is σ = 44497589760. Its totient is φ = 6065756928.

The previous prime is 20168500007. The next prime is 20168500039. The reversal of 20168500038 is 83000586102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20168499981 and 20168500008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20168500039) 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, 594420 + ... + 627432.

It is an arithmetic number, because the mean of its divisors is an integer number (695274840).

Almost surely, 2^20168500038 is an apocalyptic number.

20168500038 is an abundant number, since it is smaller than the sum of its proper divisors (24329089722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20168500038 is a wasteful number, since it uses less digits than its factorization.

20168500038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33293.

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 20168500038 in words is "twenty billion, one hundred sixty-eight million, five hundred thousand, thirty-eight".