20000100000000 has 648 divisors, whose sum is σ = 67108637515360. Its totient is φ = 5287680000000.

The previous prime is 20000099999969. The next prime is 20000100000031. The reversal of 20000100000000 is 100002.

It is an interprime number because it is at equal distance from previous prime (20000099999969) and next prime (20000100000031).

It is a Harshad number since it is a multiple of its sum of digits (3).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 48899999796 + ... + 48900000204.

Almost surely, 2^{20000100000000} is an apocalyptic number.

20000100000000 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 20000100000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33554318757680).

20000100000000 is an abundant number, since it is smaller than the sum of its proper divisors (47108537515360).

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

20000100000000 is an frugal number, since it uses more digits than its factorization.

20000100000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 3.

Adding to 20000100000000 its reverse (100002), we get a palindrome (20000100100002).

The spelling of 20000100000000 in words is "twenty trillion, one hundred million", and thus it is an aban number.