84565715834 has 16 divisors (see below), whose sum is σ = 126963868416. Its totient is φ = 42244448400.

The previous prime is 84565715809. The next prime is 84565715873. The reversal of 84565715834 is 43851756548.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 84565715834.

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, 16363919 + ... + 16369085.

It is an arithmetic number, because the mean of its divisors is an integer number (7935241776).

Almost surely, 2^84565715834 is an apocalyptic number.

84565715834 is a deficient number, since it is larger than the sum of its proper divisors (42398152582).

84565715834 is a wasteful number, since it uses less digits than its factorization.

84565715834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11021.

The product of its digits is 16128000, while the sum is 56.

The spelling of 84565715834 in words is "eighty-four billion, five hundred sixty-five million, seven hundred fifteen thousand, eight hundred thirty-four".