81648000902 has 16 divisors (see below), whose sum is σ = 132369083952. Its totient is φ = 37547647200.

The previous prime is 81648000887. The next prime is 81648000943. The reversal of 81648000902 is 20900084618.

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 7 ways as a sum of consecutive naturals, for example, 5661224 + ... + 5675627.

It is an arithmetic number, because the mean of its divisors is an integer number (8273067747).

Almost surely, 2^81648000902 is an apocalyptic number.

81648000902 is a deficient number, since it is larger than the sum of its proper divisors (50721083050).

81648000902 is a wasteful number, since it uses less digits than its factorization.

81648000902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11337143.

The product of its (nonzero) digits is 27648, while the sum is 38.

The spelling of 81648000902 in words is "eighty-one billion, six hundred forty-eight million, nine hundred two", and thus it is an aban number.