159721609112 has 32 divisors (see below), whose sum is σ = 322893061680. Its totient is φ = 73631203200.

The previous prime is 159721609111. The next prime is 159721609129. The reversal of 159721609112 is 211906127951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159721609111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 811514 + ... + 988937.

Almost surely, 2^159721609112 is an apocalyptic number.

It is an amenable number.

159721609112 is an abundant number, since it is smaller than the sum of its proper divisors (163171452568).

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

159721609112 is a wasteful number, since it uses less digits than its factorization.

159721609112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801323 (or 1801319 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 44.

The spelling of 159721609112 in words is "one hundred fifty-nine billion, seven hundred twenty-one million, six hundred nine thousand, one hundred twelve".