81002682184 has 32 divisors (see below), whose sum is σ = 152271187200. Its totient is φ = 40397118400.

The previous prime is 81002682179. The next prime is 81002682193. The reversal of 81002682184 is 48128620018.

It is a super-2 number, since 2×81002682184² (a number of 23 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 10867659 + ... + 10875109.

It is an arithmetic number, because the mean of its divisors is an integer number (4758474600).

Almost surely, 2^81002682184 is an apocalyptic number.

It is an amenable number.

81002682184 is a deficient number, since it is larger than the sum of its proper divisors (71268505016).

81002682184 is a wasteful number, since it uses less digits than its factorization.

81002682184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10773 (or 10769 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 40.

The spelling of 81002682184 in words is "eighty-one billion, two million, six hundred eighty-two thousand, one hundred eighty-four".