16539642159 has 8 divisors (see below), whose sum is σ = 23350083120. Its totient is φ = 10377814656.

The previous prime is 16539642157. The next prime is 16539642167. The reversal of 16539642159 is 95124693561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16539642159 - 2¹ = 16539642157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 324306709 = 16539642159 / (1 + 6 + 5 + 3 + 9 + 6 + 4 + 2 + 1 + 5 + 9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16539642157) 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, 162153304 + ... + 162153405.

It is an arithmetic number, because the mean of its divisors is an integer number (2918760390).

Almost surely, 2^16539642159 is an apocalyptic number.

16539642159 is a deficient number, since it is larger than the sum of its proper divisors (6810440961).

16539642159 is a wasteful number, since it uses less digits than its factorization.

16539642159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324306729.

The product of its digits is 1749600, while the sum is 51.

The spelling of 16539642159 in words is "sixteen billion, five hundred thirty-nine million, six hundred forty-two thousand, one hundred fifty-nine".