80891316558 has 48 divisors (see below), whose sum is σ = 190013241600. Its totient is φ = 24722580672.

The previous prime is 80891316557. The next prime is 80891316559. The reversal of 80891316558 is 85561319808.

80891316558 is a `hidden beast` number, since 8 + 0 + 89 + 1 + 3 + 1 + 6 + 558 = 666.

It is an interprime number because it is at equal distance from previous prime (80891316557) and next prime (80891316559).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80891316557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1125166 + ... + 1194897.

It is an arithmetic number, because the mean of its divisors is an integer number (3958609200).

Almost surely, 2^80891316558 is an apocalyptic number.

80891316558 is an abundant number, since it is smaller than the sum of its proper divisors (109121925042).

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

80891316558 is a wasteful number, since it uses less digits than its factorization.

80891316558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320233 (or 2320230 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 54.

The spelling of 80891316558 in words is "eighty billion, eight hundred ninety-one million, three hundred sixteen thousand, five hundred fifty-eight".