20013251104 has 144 divisors (see below), whose sum is σ = 50129785440. Its totient is φ = 7777244160.

The previous prime is 20013251087. The next prime is 20013251113. The reversal of 20013251104 is 40115231002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7881067 + ... + 7883605.

It is an arithmetic number, because the mean of its divisors is an integer number (348123510).

Almost surely, 2^20013251104 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 20013251104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25064892720).

20013251104 is an abundant number, since it is smaller than the sum of its proper divisors (30116534336).

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

20013251104 is a wasteful number, since it uses less digits than its factorization.

20013251104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3031 (or 3016 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 20013251104 its reverse (40115231002), we get a palindrome (60128482106).

The spelling of 20013251104 in words is "twenty billion, thirteen million, two hundred fifty-one thousand, one hundred four".