159435878643 has 12 divisors (see below), whose sum is σ = 230329443448. Its totient is φ = 106275274560.

The previous prime is 159435878621. The next prime is 159435878671. The reversal of 159435878643 is 346878534951.

159435878643 is a `hidden beast` number, since 1 + 5 + 9 + 4 + 3 + 587 + 8 + 6 + 43 = 666.

It is not a de Polignac number, because 159435878643 - 2⁵ = 159435878611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159435878603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1209805 + ... + 1335102.

Almost surely, 2^159435878643 is an apocalyptic number.

159435878643 is a deficient number, since it is larger than the sum of its proper divisors (70893564805).

159435878643 is a wasteful number, since it uses less digits than its factorization.

159435878643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2551874 (or 2551871 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 63.

The spelling of 159435878643 in words is "one hundred fifty-nine billion, four hundred thirty-five million, eight hundred seventy-eight thousand, six hundred forty-three".