81833033818 has 32 divisors (see below), whose sum is σ = 126461321280. Its totient is φ = 39698780160.

The previous prime is 81833033797. The next prime is 81833033857.

81833033818 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3775833 + ... + 3797443.

It is an arithmetic number, because the mean of its divisors is an integer number (3951916290).

Almost surely, 2^81833033818 is an apocalyptic number.

81833033818 is a deficient number, since it is larger than the sum of its proper divisors (44628287462).

81833033818 is a wasteful number, since it uses less digits than its factorization.

81833033818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22062.

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 81833033818 in words is "eighty-one billion, eight hundred thirty-three million, thirty-three thousand, eight hundred eighteen".