166227635376337 has 2 divisors, whose sum is σ = 166227635376338. Its totient is φ = 166227635376336.

The previous prime is 166227635376311. The next prime is 166227635376373. The reversal of 166227635376337 is 733673536722661.

Together with next prime (166227635376373) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106225818041281 + 60001817335056 = 10306591^2 + 7746084^2 .

It is a cyclic number.

It is not a de Polignac number, because 166227635376337 - 2¹¹ = 166227635374289 is a prime.

It is not a weakly prime, because it can be changed into another prime (166227635376037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83113817688168 + 83113817688169.

It is an arithmetic number, because the mean of its divisors is an integer number (83113817688169).

Almost surely, 2^{166227635376337} is an apocalyptic number.

It is an amenable number.

166227635376337 is a deficient number, since it is larger than the sum of its proper divisors (1).

166227635376337 is an equidigital number, since it uses as much as digits as its factorization.

166227635376337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720135360, while the sum is 67.

The spelling of 166227635376337 in words is "one hundred sixty-six trillion, two hundred twenty-seven billion, six hundred thirty-five million, three hundred seventy-six thousand, three hundred thirty-seven".