16347921766 has 16 divisors (see below), whose sum is σ = 26836622928. Its totient is φ = 7407129600.

The previous prime is 16347921763. The next prime is 16347921773. The reversal of 16347921766 is 66712974361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16347921763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1180155 + ... + 1193926.

It is an arithmetic number, because the mean of its divisors is an integer number (1677288933).

Almost surely, 2^16347921766 is an apocalyptic number.

16347921766 is a deficient number, since it is larger than the sum of its proper divisors (10488701162).

16347921766 is a wasteful number, since it uses less digits than its factorization.

16347921766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2374407.

The product of its digits is 2286144, while the sum is 52.

The spelling of 16347921766 in words is "sixteen billion, three hundred forty-seven million, nine hundred twenty-one thousand, seven hundred sixty-six".