81013408484 has 12 divisors (see below), whose sum is σ = 147937528704. Its totient is φ = 38745543144.

The previous prime is 81013408477. The next prime is 81013408543. The reversal of 81013408484 is 48480431018.

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 3 ways as a sum of consecutive naturals, for example, 440290172 + ... + 440290355.

It is an arithmetic number, because the mean of its divisors is an integer number (12328127392).

Almost surely, 2^81013408484 is an apocalyptic number.

It is an amenable number.

81013408484 is a deficient number, since it is larger than the sum of its proper divisors (66924120220).

81013408484 is a wasteful number, since it uses less digits than its factorization.

81013408484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880580554 (or 880580552 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 41.

The spelling of 81013408484 in words is "eighty-one billion, thirteen million, four hundred eight thousand, four hundred eighty-four".