20016000000 has 462 divisors, whose sum is σ = 72763521740. Its totient is φ = 5299200000.

The previous prime is 20015999999. The next prime is 20016000019. The reversal of 20016000000 is 61002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 143999931 + ... + 144000069.

Almost surely, 2^20016000000 is an apocalyptic number.

20016000000 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 20016000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36381760870).

20016000000 is an abundant number, since it is smaller than the sum of its proper divisors (52747521740).

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

20016000000 is an frugal number, since it uses more digits than its factorization.

20016000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 20016000000 its reverse (61002), we get a palindrome (20016061002).

The spelling of 20016000000 in words is "twenty billion, sixteen million", and thus it is an aban number and an uban number.