20066810880 has 704 divisors, whose sum is σ = 73121329152. Its totient is φ = 4671406080.

The previous prime is 20066810873. The next prime is 20066810899. The reversal of 20066810880 is 8801866002.

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, 299504607 + ... + 299504673.

Almost surely, 2^20066810880 is an apocalyptic number.

20066810880 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 20066810880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36560664576).

20066810880 is an abundant number, since it is smaller than the sum of its proper divisors (53054518272).

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

20066810880 is a wasteful number, since it uses less digits than its factorization.

20066810880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The spelling of 20066810880 in words is "twenty billion, sixty-six million, eight hundred ten thousand, eight hundred eighty".