200421568017792 has 512 divisors, whose sum is σ = 665258308070400. Its totient is φ = 58867559792640.

The previous prime is 200421568017751. The next prime is 200421568017809. The reversal of 200421568017792 is 297710865124002.

200421568017792 is a `hidden beast` number, since 2 + 0 + 0 + 4 + 2 + 1 + 568 + 0 + 1 + 7 + 79 + 2 = 666.

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

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, 369662808 + ... + 370204584.

It is an arithmetic number, because the mean of its divisors is an integer number (1299332632950).

Almost surely, 2^{200421568017792} is an apocalyptic number.

200421568017792 is a gapful number since it is divisible by the number (22) 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 200421568017792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332629154035200).

200421568017792 is an abundant number, since it is smaller than the sum of its proper divisors (464836740052608).

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

200421568017792 is a wasteful number, since it uses less digits than its factorization.

200421568017792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542111 (or 542093 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

It can be divided in two parts, 2004215 and 68017792, that added together give a palindrome (70022007).

The spelling of 200421568017792 in words is "two hundred trillion, four hundred twenty-one billion, five hundred sixty-eight million, seventeen thousand, seven hundred ninety-two".