159811789444 has 24 divisors (see below), whose sum is σ = 283862623968. Its totient is φ = 78717088320.

The previous prime is 159811789439. The next prime is 159811789451. The reversal of 159811789444 is 444987118951.

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, 1041294 + ... + 1184869.

It is an arithmetic number, because the mean of its divisors is an integer number (11827609332).

Almost surely, 2^159811789444 is an apocalyptic number.

It is an amenable number.

159811789444 is a deficient number, since it is larger than the sum of its proper divisors (124050834524).

159811789444 is a wasteful number, since it uses less digits than its factorization.

159811789444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226435 (or 2226433 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 61.

The spelling of 159811789444 in words is "one hundred fifty-nine billion, eight hundred eleven million, seven hundred eighty-nine thousand, four hundred forty-four".