20066163981600 has 432 divisors, whose sum is σ = 72332903585376. Its totient is φ = 4791891456000.

The previous prime is 20066163981587. The next prime is 20066163981701. The reversal of 20066163981600 is 618936166002.

It is a super-2 number, since 2×20066163981600² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 20066163981600.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 118424940 + ... + 118594260.

It is an arithmetic number, because the mean of its divisors is an integer number (167437276818).

Almost surely, 2^{20066163981600} is an apocalyptic number.

20066163981600 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 20066163981600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36166451792688).

20066163981600 is an abundant number, since it is smaller than the sum of its proper divisors (52266739603776).

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

20066163981600 is a wasteful number, since it uses less digits than its factorization.

20066163981600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169489 (or 169409 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 48.

The spelling of 20066163981600 in words is "twenty trillion, sixty-six billion, one hundred sixty-three million, nine hundred eighty-one thousand, six hundred".