159689387443 has 4 divisors (see below), whose sum is σ = 169082880840. Its totient is φ = 150295894048.

The previous prime is 159689387441. The next prime is 159689387519. The reversal of 159689387443 is 344783986951.

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

It is not a de Polignac number, because 159689387443 - 2¹ = 159689387441 is a prime.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159689387441) 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, 4696746673 + ... + 4696746706.

It is an arithmetic number, because the mean of its divisors is an integer number (42270720210).

Almost surely, 2^159689387443 is an apocalyptic number.

159689387443 is a deficient number, since it is larger than the sum of its proper divisors (9393493397).

159689387443 is an equidigital number, since it uses as much as digits as its factorization.

159689387443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9393493396.

The product of its digits is 156764160, while the sum is 67.

The spelling of 159689387443 in words is "one hundred fifty-nine billion, six hundred eighty-nine million, three hundred eighty-seven thousand, four hundred forty-three".