81733016200 has 192 divisors, whose sum is σ = 221599566720. Its totient is φ = 27734784000.

The previous prime is 81733016119. The next prime is 81733016213. The reversal of 81733016200 is 261033718.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2054902 + ... + 2094298.

It is an arithmetic number, because the mean of its divisors is an integer number (1154164410).

Almost surely, 2^81733016200 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81733016200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110799783360).

81733016200 is an abundant number, since it is smaller than the sum of its proper divisors (139866550520).

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

81733016200 is a wasteful number, since it uses less digits than its factorization.

81733016200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39488 (or 39479 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

Adding to 81733016200 its reverse (261033718), we get a palindrome (81994049918).

The spelling of 81733016200 in words is "eighty-one billion, seven hundred thirty-three million, sixteen thousand, two hundred".