16391941318929 has 32 divisors (see below), whose sum is σ = 24881834870784. Its totient is φ = 9501670759680.

The previous prime is 16391941318903. The next prime is 16391941318939. The reversal of 16391941318929 is 92981314919361.

It is not a de Polignac number, because 16391941318929 - 2¹⁷ = 16391941187857 is a prime.

It is a super-3 number, since 3×16391941318929³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16391941318929.

It is not an unprimeable number, because it can be changed into a prime (16391941318939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6998457 + ... + 9042249.

It is an arithmetic number, because the mean of its divisors is an integer number (777557339712).

Almost surely, 2^{16391941318929} is an apocalyptic number.

It is an amenable number.

16391941318929 is a deficient number, since it is larger than the sum of its proper divisors (8489893551855).

16391941318929 is a wasteful number, since it uses less digits than its factorization.

16391941318929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054397.

The product of its digits is 22674816, while the sum is 66.

The spelling of 16391941318929 in words is "sixteen trillion, three hundred ninety-one billion, nine hundred forty-one million, three hundred eighteen thousand, nine hundred twenty-nine".