159812644443 has 4 divisors (see below), whose sum is σ = 213083525928. Its totient is φ = 106541762960.

The previous prime is 159812644429. The next prime is 159812644487. The reversal of 159812644443 is 344446218951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344446218951 = 3 ⋅114815406317.

It is a cyclic number.

It is not a de Polignac number, because 159812644443 - 2⁴ = 159812644427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (159812646443) 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, 26635440738 + ... + 26635440743.

It is an arithmetic number, because the mean of its divisors is an integer number (53270881482).

Almost surely, 2^159812644443 is an apocalyptic number.

159812644443 is a deficient number, since it is larger than the sum of its proper divisors (53270881485).

159812644443 is an equidigital number, since it uses as much as digits as its factorization.

159812644443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53270881484.

The product of its digits is 3317760, while the sum is 51.

The spelling of 159812644443 in words is "one hundred fifty-nine billion, eight hundred twelve million, six hundred forty-four thousand, four hundred forty-three".