16667623656161 has 16 divisors (see below), whose sum is σ = 17386520406528. Its totient is φ = 15960127680000.

The previous prime is 16667623656121. The next prime is 16667623656163. The reversal of 16667623656161 is 16165632676661.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16667623656161 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16667623656094 and 16667623656103.

It is not an unprimeable number, because it can be changed into a prime (16667623656163) 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 15 ways as a sum of consecutive naturals, for example, 12987911 + ... + 14213411.

It is an arithmetic number, because the mean of its divisors is an integer number (1086657525408).

Almost surely, 2^{16667623656161} is an apocalyptic number.

It is an amenable number.

16667623656161 is a deficient number, since it is larger than the sum of its proper divisors (718896750367).

16667623656161 is a wasteful number, since it uses less digits than its factorization.

16667623656161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230152.

The product of its digits is 58786560, while the sum is 62.

The spelling of 16667623656161 in words is "sixteen trillion, six hundred sixty-seven billion, six hundred twenty-three million, six hundred fifty-six thousand, one hundred sixty-one".