20117003826 has 16 divisors (see below), whose sum is σ = 41090050944. Its totient is φ = 6562994064.

The previous prime is 20117003813. The next prime is 20117003827. The reversal of 20117003826 is 62830071102.

It is a junction number, because it is equal to n+sod(n) for n = 20117003793 and 20117003802.

It is not an unprimeable number, because it can be changed into a prime (20117003827) 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, 35668165 + ... + 35668728.

It is an arithmetic number, because the mean of its divisors is an integer number (2568128184).

Almost surely, 2^20117003826 is an apocalyptic number.

20117003826 is an abundant number, since it is smaller than the sum of its proper divisors (20973047118).

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

20117003826 is a wasteful number, since it uses less digits than its factorization.

20117003826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71336945.

The product of its (nonzero) digits is 4032, while the sum is 30.

Adding to 20117003826 its reverse (62830071102), we get a palindrome (82947074928).

The spelling of 20117003826 in words is "twenty billion, one hundred seventeen million, three thousand, eight hundred twenty-six".