16559521346 has 4 divisors (see below), whose sum is σ = 24839282022. Its totient is φ = 8279760672.

The previous prime is 16559521309. The next prime is 16559521367. The reversal of 16559521346 is 64312595561.

16559521346 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16317252121 + 242269225 = 127739^2 + 15565^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16559521346.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4139880335 + ... + 4139880338.

Almost surely, 2^16559521346 is an apocalyptic number.

16559521346 is a deficient number, since it is larger than the sum of its proper divisors (8279760676).

16559521346 is an equidigital number, since it uses as much as digits as its factorization.

16559521346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8279760675.

The product of its digits is 972000, while the sum is 47.

The spelling of 16559521346 in words is "sixteen billion, five hundred fifty-nine million, five hundred twenty-one thousand, three hundred forty-six".