81024487016 has 32 divisors (see below), whose sum is σ = 166127522400. Its totient is φ = 36741397440.

The previous prime is 81024487007. The next prime is 81024487021. The reversal of 81024487016 is 61078442018.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1061855 + ... + 1135598.

It is an arithmetic number, because the mean of its divisors is an integer number (5191485075).

Almost surely, 2^81024487016 is an apocalyptic number.

It is an amenable number.

81024487016 is an abundant number, since it is smaller than the sum of its proper divisors (85103035384).

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

81024487016 is a wasteful number, since it uses less digits than its factorization.

81024487016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197889 (or 2197885 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 41.

The spelling of 81024487016 in words is "eighty-one billion, twenty-four million, four hundred eighty-seven thousand, sixteen".