16539358874 has 8 divisors (see below), whose sum is σ = 24905572308. Its totient is φ = 8237501440.

The previous prime is 16539358861. The next prime is 16539358883. The reversal of 16539358874 is 47885393561.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16360200649 + 179158225 = 127907^2 + 13385^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16088357 + ... + 16089384.

Almost surely, 2^16539358874 is an apocalyptic number.

16539358874 is a deficient number, since it is larger than the sum of its proper divisors (8366213434).

16539358874 is a wasteful number, since it uses less digits than its factorization.

16539358874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32178000.

The product of its digits is 21772800, while the sum is 59.

The spelling of 16539358874 in words is "sixteen billion, five hundred thirty-nine million, three hundred fifty-eight thousand, eight hundred seventy-four".