16321604324511 has 16 divisors (see below), whose sum is σ = 22559186392704. Its totient is φ = 10488042781344.

The previous prime is 16321604324483. The next prime is 16321604324521. The reversal of 16321604324511 is 11542340612361.

It is not a de Polignac number, because 16321604324511 - 2⁷ = 16321604324383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16321604324511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16321604324521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 687097845 + ... + 687121598.

It is an arithmetic number, because the mean of its divisors is an integer number (1409949149544).

Almost surely, 2^{16321604324511} is an apocalyptic number.

16321604324511 is a deficient number, since it is larger than the sum of its proper divisors (6237582068193).

16321604324511 is a wasteful number, since it uses less digits than its factorization.

16321604324511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374219590.

The product of its (nonzero) digits is 103680, while the sum is 39.

Adding to 16321604324511 its reverse (11542340612361), we get a palindrome (27863944936872).

The spelling of 16321604324511 in words is "sixteen trillion, three hundred twenty-one billion, six hundred four million, three hundred twenty-four thousand, five hundred eleven".