20641062854880 has 480 divisors, whose sum is σ = 78502910270400. Its totient is φ = 5077403025408.

The previous prime is 20641062854851. The next prime is 20641062854887. The reversal of 20641062854880 is 8845826014602.

20641062854880 is a `hidden beast` number, since 2 + 0 + 6 + 4 + 1 + 0 + 628 + 5 + 4 + 8 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20641062854887) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 250825581 + ... + 250907859.

It is an arithmetic number, because the mean of its divisors is an integer number (163547729730).

Almost surely, 2^{20641062854880} is an apocalyptic number.

20641062854880 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 20641062854880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39251455135200).

20641062854880 is an abundant number, since it is smaller than the sum of its proper divisors (57861847415520).

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

20641062854880 is a wasteful number, since it uses less digits than its factorization.

20641062854880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83808 (or 83791 counting only the distinct ones).

The product of its (nonzero) digits is 5898240, while the sum is 54.

The spelling of 20641062854880 in words is "twenty trillion, six hundred forty-one billion, sixty-two million, eight hundred fifty-four thousand, eight hundred eighty".