16366393926173 has 2 divisors, whose sum is σ = 16366393926174. Its totient is φ = 16366393926172.

The previous prime is 16366393926131. The next prime is 16366393926217. The reversal of 16366393926173 is 37162939366361.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16366377709444 + 16216729 = 4045538^2 + 4027^2 .

It is a cyclic number.

It is not a de Polignac number, because 16366393926173 - 2⁴² = 11968347415069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16366393926073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8183196963086 + 8183196963087.

It is an arithmetic number, because the mean of its divisors is an integer number (8183196963087).

Almost surely, 2^{16366393926173} is an apocalyptic number.

It is an amenable number.

16366393926173 is a deficient number, since it is larger than the sum of its proper divisors (1).

16366393926173 is an equidigital number, since it uses as much as digits as its factorization.

16366393926173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 119042784, while the sum is 65.

The spelling of 16366393926173 in words is "sixteen trillion, three hundred sixty-six billion, three hundred ninety-three million, nine hundred twenty-six thousand, one hundred seventy-three".