159668049128 has 64 divisors (see below), whose sum is σ = 362493480960. Its totient is φ = 64364553216.

The previous prime is 159668049119. The next prime is 159668049193. The reversal of 159668049128 is 821940866951.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1532750 + ... + 1633602.

It is an arithmetic number, because the mean of its divisors is an integer number (5663960640).

Almost surely, 2^159668049128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159668049128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181246740480).

159668049128 is an abundant number, since it is smaller than the sum of its proper divisors (202825431832).

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

159668049128 is a wasteful number, since it uses less digits than its factorization.

159668049128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102546 (or 102542 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 59.

The spelling of 159668049128 in words is "one hundred fifty-nine billion, six hundred sixty-eight million, forty-nine thousand, one hundred twenty-eight".