20055766672820 has 192 divisors, whose sum is σ = 44942107392000. Its totient is φ = 7501110769152.

The previous prime is 20055766672819. The next prime is 20055766672831. The reversal of 20055766672820 is 2827666755002.

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, 10742241527 + ... + 10742243393.

It is an arithmetic number, because the mean of its divisors is an integer number (234073476000).

Almost surely, 2^{20055766672820} is an apocalyptic number.

20055766672820 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 20055766672820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22471053696000).

20055766672820 is an abundant number, since it is smaller than the sum of its proper divisors (24886340719180).

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

20055766672820 is a wasteful number, since it uses less digits than its factorization.

20055766672820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3334 (or 3332 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 56.

The spelling of 20055766672820 in words is "twenty trillion, fifty-five billion, seven hundred sixty-six million, six hundred seventy-two thousand, eight hundred twenty".