159666539432 has 16 divisors (see below), whose sum is σ = 299725741140. Its totient is φ = 79739675136.

The previous prime is 159666539423. The next prime is 159666539453. The reversal of 159666539432 is 234935666951.

159666539432 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 159094085956 + 572453476 = 398866^2 + 23926^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11692073 + ... + 11705720.

Almost surely, 2^159666539432 is an apocalyptic number.

It is an amenable number.

159666539432 is a deficient number, since it is larger than the sum of its proper divisors (140059201708).

159666539432 is a wasteful number, since it uses less digits than its factorization.

159666539432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23398652 (or 23398648 counting only the distinct ones).

The product of its digits is 31492800, while the sum is 59.

The spelling of 159666539432 in words is "one hundred fifty-nine billion, six hundred sixty-six million, five hundred thirty-nine thousand, four hundred thirty-two".