80859591194 has 4 divisors (see below), whose sum is σ = 121289386794. Its totient is φ = 40429795596.

The previous prime is 80859591181. The next prime is 80859591203. The reversal of 80859591194 is 49119595808.

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

It can be written as a sum of positive squares in only one way, i.e., 78257265025 + 2602326169 = 279745^2 + 51013^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 20214897797 + ... + 20214897800.

Almost surely, 2^80859591194 is an apocalyptic number.

80859591194 is a deficient number, since it is larger than the sum of its proper divisors (40429795600).

80859591194 is a wasteful number, since it uses less digits than its factorization.

80859591194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40429795599.

The product of its (nonzero) digits is 4665600, while the sum is 59.

The spelling of 80859591194 in words is "eighty billion, eight hundred fifty-nine million, five hundred ninety-one thousand, one hundred ninety-four".