166570275638101 has 2 divisors, whose sum is σ = 166570275638102. Its totient is φ = 166570275638100.

The previous prime is 166570275638047. The next prime is 166570275638219. The reversal of 166570275638101 is 101836572075661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166432059731025 + 138215907076 = 12900855^2 + 371774^2 .

It is a cyclic number.

It is not a de Polignac number, because 166570275638101 - 2¹¹ = 166570275636053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166570275338101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83285137819050 + 83285137819051.

It is an arithmetic number, because the mean of its divisors is an integer number (83285137819051).

Almost surely, 2^{166570275638101} is an apocalyptic number.

It is an amenable number.

166570275638101 is a deficient number, since it is larger than the sum of its proper divisors (1).

166570275638101 is an equidigital number, since it uses as much as digits as its factorization.

166570275638101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12700800, while the sum is 58.

The spelling of 166570275638101 in words is "one hundred sixty-six trillion, five hundred seventy billion, two hundred seventy-five million, six hundred thirty-eight thousand, one hundred one".