16521927243 has 16 divisors (see below), whose sum is σ = 22370489856. Its totient is φ = 10844174880.

The previous prime is 16521927239. The next prime is 16521927277. The reversal of 16521927243 is 34272912561.

It is a happy number.

16521927243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16521927243 - 2² = 16521927239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16521927195 and 16521927204.

It is not an unprimeable number, because it can be changed into a prime (16521927293) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 354105 + ... + 398037.

It is an arithmetic number, because the mean of its divisors is an integer number (1398155616).

Almost surely, 2^16521927243 is an apocalyptic number.

16521927243 is a deficient number, since it is larger than the sum of its proper divisors (5848562613).

16521927243 is a wasteful number, since it uses less digits than its factorization.

16521927243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45874.

The product of its digits is 181440, while the sum is 42.

The spelling of 16521927243 in words is "sixteen billion, five hundred twenty-one million, nine hundred twenty-seven thousand, two hundred forty-three".