85543434558 has 16 divisors (see below), whose sum is σ = 190096521360. Its totient is φ = 28514478168.

The previous prime is 85543434547. The next prime is 85543434593.

85543434558 is a `hidden beast` number, since 8 + 5 + 5 + 43 + 43 + 4 + 558 = 666.

85543434558 is nontrivially palindromic in base 10.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 1584137677 = 85543434558 / (8 + 5 + 5 + 4 + 3 + 4 + 3 + 4 + 5 + 5 + 8).

It is a congruent number.

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, 792068785 + ... + 792068892.

It is an arithmetic number, because the mean of its divisors is an integer number (11881032585).

Almost surely, 2^85543434558 is an apocalyptic number.

85543434558 is an abundant number, since it is smaller than the sum of its proper divisors (104553086802).

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

85543434558 is a wasteful number, since it uses less digits than its factorization.

85543434558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584137688 (or 1584137682 counting only the distinct ones).

The product of its digits is 23040000, while the sum is 54.

The spelling of 85543434558 in words is "eighty-five billion, five hundred forty-three million, four hundred thirty-four thousand, five hundred fifty-eight".