81882630990 has 96 divisors (see below), whose sum is σ = 213663786336. Its totient is φ = 21756660480.

The previous prime is 81882630979. The next prime is 81882631027. The reversal of 81882630990 is 9903628818.

It is a happy number.

It is a Curzon number.

It is a congruent number.

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, 50326557 + ... + 50328183.

It is an arithmetic number, because the mean of its divisors is an integer number (2225664441).

Almost surely, 2^81882630990 is an apocalyptic number.

81882630990 is an abundant number, since it is smaller than the sum of its proper divisors (131781155346).

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

81882630990 is a wasteful number, since it uses less digits than its factorization.

81882630990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3314 (or 3311 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The spelling of 81882630990 in words is "eighty-one billion, eight hundred eighty-two million, six hundred thirty thousand, nine hundred ninety".