84667543656 has 32 divisors (see below), whose sum is σ = 211742553600. Its totient is φ = 28212688640.

The previous prime is 84667543613. The next prime is 84667543657. The reversal of 84667543656 is 65634576648.

It is a self number, because there is not a number n which added to its sum of digits gives 84667543656.

It is not an unprimeable number, because it can be changed into a prime (84667543657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543585 + ... + 681776.

It is an arithmetic number, because the mean of its divisors is an integer number (6616954800).

Almost surely, 2^84667543656 is an apocalyptic number.

It is an amenable number.

84667543656 is an abundant number, since it is smaller than the sum of its proper divisors (127075009944).

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

84667543656 is a wasteful number, since it uses less digits than its factorization.

84667543656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228249 (or 1228245 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 60.

The spelling of 84667543656 in words is "eighty-four billion, six hundred sixty-seven million, five hundred forty-three thousand, six hundred fifty-six".