20005216776020 has 192 divisors, whose sum is σ = 52592711270400. Its totient is φ = 6241467640320.

The previous prime is 20005216776007. The next prime is 20005216776053. The reversal of 20005216776020 is 2067761250002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4190966 + ... + 7587794.

It is an arithmetic number, because the mean of its divisors is an integer number (273920371200).

Almost surely, 2^{20005216776020} is an apocalyptic number.

20005216776020 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 20005216776020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26296355635200).

20005216776020 is an abundant number, since it is smaller than the sum of its proper divisors (32587494494380).

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

20005216776020 is a wasteful number, since it uses less digits than its factorization.

20005216776020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3396958 (or 3396956 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 38.

The spelling of 20005216776020 in words is "twenty trillion, five billion, two hundred sixteen million, seven hundred seventy-six thousand, twenty".