81932033080 has 32 divisors (see below), whose sum is σ = 190703872800. Its totient is φ = 31642715776.

The previous prime is 81932033033. The next prime is 81932033089. The reversal of 81932033080 is 8033023918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81932033089) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 35314372 + ... + 35316691.

It is an arithmetic number, because the mean of its divisors is an integer number (5959496025).

Almost surely, 2^81932033080 is an apocalyptic number.

It is an amenable number.

81932033080 is an abundant number, since it is smaller than the sum of its proper divisors (108771839720).

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

81932033080 is a wasteful number, since it uses less digits than its factorization.

81932033080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70631103 (or 70631099 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

Adding to 81932033080 its reverse (8033023918), we get a palindrome (89965056998).

The spelling of 81932033080 in words is "eighty-one billion, nine hundred thirty-two million, thirty-three thousand, eighty".