20002000100000 has 144 divisors (see below), whose sum is σ = 49307165623800. Its totient is φ = 7986716160000.

The previous prime is 20002000099997. The next prime is 20002000100029. The reversal of 20002000100000 is 100020002.

It can be written as a sum of positive squares in 12 ways, for example, as 9241527040144 + 10760473059856 = 3039988^2 + 3280316^2 .

It is a Harshad number since it is a multiple of its sum of digits (5).

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, 56724236 + ... + 57075764.

Almost surely, 2^{20002000100000} is an apocalyptic number.

20002000100000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20002000100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24653582811900).

20002000100000 is an abundant number, since it is smaller than the sum of its proper divisors (29305165523800).

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

20002000100000 is an frugal number, since it uses more digits than its factorization.

20002000100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352133 (or 352105 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 5.

Adding to 20002000100000 its reverse (100020002), we get a palindrome (20002100120002).

The spelling of 20002000100000 in words is "twenty trillion, two billion, one hundred thousand".