16424521361 has 4 divisors (see below), whose sum is σ = 16441230912. Its totient is φ = 16407811812.

The previous prime is 16424521357. The next prime is 16424521409. The reversal of 16424521361 is 16312542461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16424521361 - 2² = 16424521357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16424521261) by changing a digit.

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, 8353301 + ... + 8355266.

It is an arithmetic number, because the mean of its divisors is an integer number (4110307728).

Almost surely, 2^16424521361 is an apocalyptic number.

It is an amenable number.

16424521361 is a deficient number, since it is larger than the sum of its proper divisors (16709551).

16424521361 is an equidigital number, since it uses as much as digits as its factorization.

16424521361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16709550.

The product of its digits is 34560, while the sum is 35.

The spelling of 16424521361 in words is "sixteen billion, four hundred twenty-four million, five hundred twenty-one thousand, three hundred sixty-one".