20003123196 has 108 divisors (see below), whose sum is σ = 59194168488. Its totient is φ = 5678697024.

The previous prime is 20003123191. The next prime is 20003123197. The reversal of 20003123196 is 69132130002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003123191) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 240835 + ... + 313061.

Almost surely, 2^20003123196 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20003123196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29597084244).

20003123196 is an abundant number, since it is smaller than the sum of its proper divisors (39191045292).

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

20003123196 is a wasteful number, since it uses less digits than its factorization.

20003123196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72408 (or 72396 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

Adding to 20003123196 its reverse (69132130002), we get a palindrome (89135253198).

The spelling of 20003123196 in words is "twenty billion, three million, one hundred twenty-three thousand, one hundred ninety-six".