20109104000 has 64 divisors (see below), whose sum is σ = 49996299600. Its totient is φ = 8043635200.

The previous prime is 20109103999. The next prime is 20109104003. The reversal of 20109104000 is 40190102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 20109104000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20109104003) 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, 612410 + ... + 644409.

Almost surely, 2^20109104000 is an apocalyptic number.

20109104000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20109104000 is an abundant number, since it is smaller than the sum of its proper divisors (29887195600).

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

20109104000 is an equidigital number, since it uses as much as digits as its factorization.

20109104000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256848 (or 1256826 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 20109104000 its reverse (40190102), we get a palindrome (20149294102).

The spelling of 20109104000 in words is "twenty billion, one hundred nine million, one hundred four thousand".