999885118543 has 4 divisors (see below), whose sum is σ = 1058701890240. Its totient is φ = 941068346848.

The previous prime is 999885118523. The next prime is 999885118571. The reversal of 999885118543 is 345811588999.

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 999885118543 - 2⁵ = 999885118511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999885118523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29408385823 + ... + 29408385856.

It is an arithmetic number, because the mean of its divisors is an integer number (264675472560).

Almost surely, 2^999885118543 is an apocalyptic number.

999885118543 is a deficient number, since it is larger than the sum of its proper divisors (58816771697).

999885118543 is a wasteful number, since it uses less digits than its factorization.

999885118543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58816771696.

The product of its digits is 111974400, while the sum is 70.

The spelling of 999885118543 in words is "nine hundred ninety-nine billion, eight hundred eighty-five million, one hundred eighteen thousand, five hundred forty-three".