16717791845 has 16 divisors (see below), whose sum is σ = 20970455040. Its totient is φ = 12770212224.

The previous prime is 16717791841. The next prime is 16717791859. The reversal of 16717791845 is 54819771761.

16717791845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 16717791845 - 2² = 16717791841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16717791841) 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, 62309 + ... + 193178.

It is an arithmetic number, because the mean of its divisors is an integer number (1310653440).

Almost surely, 2^16717791845 is an apocalyptic number.

It is an amenable number.

16717791845 is a deficient number, since it is larger than the sum of its proper divisors (4252663195).

16717791845 is a wasteful number, since it uses less digits than its factorization.

16717791845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256084.

The product of its digits is 2963520, while the sum is 56.

The spelling of 16717791845 in words is "sixteen billion, seven hundred seventeen million, seven hundred ninety-one thousand, eight hundred forty-five".