84995974563 has 4 divisors (see below), whose sum is σ = 113327966088. Its totient is φ = 56663983040.

The previous prime is 84995974559. The next prime is 84995974579. The reversal of 84995974563 is 36547959948.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84995974563 - 2² = 84995974559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84995974513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14165995758 + ... + 14165995763.

It is an arithmetic number, because the mean of its divisors is an integer number (28331991522).

Almost surely, 2^84995974563 is an apocalyptic number.

84995974563 is a deficient number, since it is larger than the sum of its proper divisors (28331991525).

84995974563 is a wasteful number, since it uses less digits than its factorization.

84995974563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28331991524.

The product of its digits is 293932800, while the sum is 69.

The spelling of 84995974563 in words is "eighty-four billion, nine hundred ninety-five million, nine hundred seventy-four thousand, five hundred sixty-three".