16545655721068 has 12 divisors (see below), whose sum is σ = 29175927264792. Its totient is φ = 8209676502560.

The previous prime is 16545655721047. The next prime is 16545655721071. The reversal of 16545655721068 is 86012755654561.

It is a super-2 number, since 2×16545655721068² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16545655720997 and 16545655721015.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 15787838905 + ... + 15787839952.

It is an arithmetic number, because the mean of its divisors is an integer number (2431327272066).

Almost surely, 2^{16545655721068} is an apocalyptic number.

It is an amenable number.

16545655721068 is a deficient number, since it is larger than the sum of its proper divisors (12630271543724).

16545655721068 is a wasteful number, since it uses less digits than its factorization.

16545655721068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31575678992 (or 31575678990 counting only the distinct ones).

The product of its (nonzero) digits is 60480000, while the sum is 61.

The spelling of 16545655721068 in words is "sixteen trillion, five hundred forty-five billion, six hundred fifty-five million, seven hundred twenty-one thousand, sixty-eight".