16366536251173 has 2 divisors, whose sum is σ = 16366536251174. Its totient is φ = 16366536251172.

The previous prime is 16366536251161. The next prime is 16366536251239. The reversal of 16366536251173 is 37115263566361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13292973278209 + 3073562972964 = 3645953^2 + 1753158^2 .

It is an emirp because it is prime and its reverse (37115263566361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16366536251173 - 2⁵ = 16366536251141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16366536251573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8183268125586 + 8183268125587.

It is an arithmetic number, because the mean of its divisors is an integer number (8183268125587).

Almost surely, 2^{16366536251173} is an apocalyptic number.

It is an amenable number.

16366536251173 is a deficient number, since it is larger than the sum of its proper divisors (1).

16366536251173 is an equidigital number, since it uses as much as digits as its factorization.

16366536251173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12247200, while the sum is 55.

The spelling of 16366536251173 in words is "sixteen trillion, three hundred sixty-six billion, five hundred thirty-six million, two hundred fifty-one thousand, one hundred seventy-three".