166675101669 has 6 divisors (see below), whose sum is σ = 240752924646. Its totient is φ = 111116734440.

The previous prime is 166675101661. The next prime is 166675101701. The reversal of 166675101669 is 966101576661.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 164095477569 + 2579624100 = 405087^2 + 50790^2 .

It is not a de Polignac number, because 166675101669 - 2³ = 166675101661 is a prime.

It is a super-2 number, since 2×166675101669² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166675101661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9259727862 + ... + 9259727879.

It is an arithmetic number, because the mean of its divisors is an integer number (40125487441).

Almost surely, 2^166675101669 is an apocalyptic number.

It is an amenable number.

166675101669 is a deficient number, since it is larger than the sum of its proper divisors (74077822977).

166675101669 is a wasteful number, since it uses less digits than its factorization.

166675101669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18519455747 (or 18519455744 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 166675101669 in words is "one hundred sixty-six billion, six hundred seventy-five million, one hundred one thousand, six hundred sixty-nine".