82884065856640 has 64 divisors (see below), whose sum is σ = 198168923013120. Its totient is φ = 33149576678400.

The previous prime is 82884065856637. The next prime is 82884065856659. The reversal of 82884065856640 is 4665856048828.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 82884065856640.

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, 2663166 + ... + 13147645.

It is an arithmetic number, because the mean of its divisors is an integer number (3096389422080).

Almost surely, 2^{82884065856640} is an apocalyptic number.

82884065856640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

82884065856640 is an abundant number, since it is smaller than the sum of its proper divisors (115284857156480).

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

82884065856640 is a wasteful number, since it uses less digits than its factorization.

82884065856640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15819021 (or 15819009 counting only the distinct ones).

The product of its (nonzero) digits is 707788800, while the sum is 70.

The spelling of 82884065856640 in words is "eighty-two trillion, eight hundred eighty-four billion, sixty-five million, eight hundred fifty-six thousand, six hundred forty".