166869369101 has 2 divisors, whose sum is σ = 166869369102. Its totient is φ = 166869369100.

The previous prime is 166869369091. The next prime is 166869369109. The reversal of 166869369101 is 101963968661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127327648900 + 39541720201 = 356830^2 + 198851^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166869369101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166869369109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83434684550 + 83434684551.

It is an arithmetic number, because the mean of its divisors is an integer number (83434684551).

Almost surely, 2^166869369101 is an apocalyptic number.

It is an amenable number.

166869369101 is a deficient number, since it is larger than the sum of its proper divisors (1).

166869369101 is an equidigital number, since it uses as much as digits as its factorization.

166869369101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2519424, while the sum is 56.

The spelling of 166869369101 in words is "one hundred sixty-six billion, eight hundred sixty-nine million, three hundred sixty-nine thousand, one hundred one".