20502039038 has 16 divisors (see below), whose sum is σ = 34187024256. Its totient is φ = 9157237920.

The previous prime is 20502039037. The next prime is 20502039073. The reversal of 20502039038 is 83093020502.

It is a junction number, because it is equal to n+sod(n) for n = 20502038995 and 20502039013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20502039037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12717581 + ... + 12719192.

It is an arithmetic number, because the mean of its divisors is an integer number (2136689016).

Almost surely, 2^20502039038 is an apocalyptic number.

20502039038 is a deficient number, since it is larger than the sum of its proper divisors (13684985218).

20502039038 is a wasteful number, since it uses less digits than its factorization.

20502039038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25436819.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 20502039038 in words is "twenty billion, five hundred two million, thirty-nine thousand, thirty-eight".