84934554643 has 16 divisors (see below), whose sum is σ = 88388948736. Its totient is φ = 81554165280.

The previous prime is 84934554637. The next prime is 84934554647. The reversal of 84934554643 is 34645543948.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84934554643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84934554647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1019305 + ... + 1099477.

It is an arithmetic number, because the mean of its divisors is an integer number (5524309296).

Almost surely, 2^84934554643 is an apocalyptic number.

84934554643 is a deficient number, since it is larger than the sum of its proper divisors (3454394093).

84934554643 is a wasteful number, since it uses less digits than its factorization.

84934554643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80634.

The product of its digits is 24883200, while the sum is 55.

The spelling of 84934554643 in words is "eighty-four billion, nine hundred thirty-four million, five hundred fifty-four thousand, six hundred forty-three".