20038738423339 has 4 divisors (see below), whose sum is σ = 20038756249440. Its totient is φ = 20038720597240.

The previous prime is 20038738423321. The next prime is 20038738423351. The reversal of 20038738423339 is 93332483783002.

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 20038738423339 - 2⁵ = 20038738423307 is a prime.

It is a super-5 number, since 5×20038738423339⁵ (a number of 68 digits) contains 55555 as substring.

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 20038738423339.

It is not an unprimeable number, because it can be changed into a prime (20038738423309) 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, 7104547 + ... + 9515884.

It is an arithmetic number, because the mean of its divisors is an integer number (5009689062360).

Almost surely, 2^{20038738423339} is an apocalyptic number.

20038738423339 is a deficient number, since it is larger than the sum of its proper divisors (17826101).

20038738423339 is a wasteful number, since it uses less digits than its factorization.

20038738423339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17826100.

The product of its (nonzero) digits is 15676416, while the sum is 55.

The spelling of 20038738423339 in words is "twenty trillion, thirty-eight billion, seven hundred thirty-eight million, four hundred twenty-three thousand, three hundred thirty-nine".