159666536448 has 288 divisors, whose sum is σ = 479784604320. Its totient is φ = 53126627328.

The previous prime is 159666536443. The next prime is 159666536467. The reversal of 159666536448 is 844635666951.

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-2 number, since 2×159666536448² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159666536441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286654186 + ... + 286654742.

It is an arithmetic number, because the mean of its divisors is an integer number (1665918765).

Almost surely, 2^159666536448 is an apocalyptic number.

159666536448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159666536448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239892302160).

159666536448 is an abundant number, since it is smaller than the sum of its proper divisors (320118067872).

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

159666536448 is an frugal number, since it uses more digits than its factorization.

159666536448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612 (or 562 counting only the distinct ones).

The product of its digits is 111974400, while the sum is 63.

The spelling of 159666536448 in words is "one hundred fifty-nine billion, six hundred sixty-six million, five hundred thirty-six thousand, four hundred forty-eight".