81203300330218 has 16 divisors (see below), whose sum is σ = 133203013225920. Its totient is φ = 36820345111200.

The previous prime is 81203300330209. The next prime is 81203300330351.

81203300330218 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4512288198 + ... + 4512306193.

It is an arithmetic number, because the mean of its divisors is an integer number (8325188326620).

Almost surely, 2^{81203300330218} is an apocalyptic number.

81203300330218 is a deficient number, since it is larger than the sum of its proper divisors (51999712895702).

81203300330218 is a wasteful number, since it uses less digits than its factorization.

81203300330218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9024594813.

The product of its (nonzero) digits is 20736, while the sum is 34.

It can be divided in two parts, 81203300 and 330218, that added together give a palindrome (81533518).

The spelling of 81203300330218 in words is "eighty-one trillion, two hundred three billion, three hundred million, three hundred thirty thousand, two hundred eighteen".