81882710808 has 256 divisors, whose sum is σ = 225779097600. Its totient is φ = 24675840000.

The previous prime is 81882710801. The next prime is 81882710813. The reversal of 81882710808 is 80801728818.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81882710801) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 133576710 + ... + 133577322.

It is an arithmetic number, because the mean of its divisors is an integer number (881949600).

Almost surely, 2^81882710808 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 81882710808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112889548800).

81882710808 is an abundant number, since it is smaller than the sum of its proper divisors (143896386792).

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

81882710808 is a wasteful number, since it uses less digits than its factorization.

81882710808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874 (or 870 counting only the distinct ones).

The product of its (nonzero) digits is 458752, while the sum is 51.

The spelling of 81882710808 in words is "eighty-one billion, eight hundred eighty-two million, seven hundred ten thousand, eight hundred eight".