166101128 has 16 divisors (see below), whose sum is σ = 311647500. Its totient is φ = 82995136.

The previous prime is 166101119. The next prime is 166101157. The reversal of 166101128 is 821101661.

It can be written as a sum of positive squares in 2 ways, for example, as 161849284 + 4251844 = 12722^2 + 2062^2 .

It is a junction number, because it is equal to n+sod(n) for n = 166101097 and 166101106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7598 + ... + 19746.

Almost surely, 2^166101128 is an apocalyptic number.

It is an amenable number.

166101128 is a deficient number, since it is larger than the sum of its proper divisors (145546372).

166101128 is a wasteful number, since it uses less digits than its factorization.

166101128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13864 (or 13860 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 166101128 is about 12888.0226567150. The cubic root of 166101128 is about 549.6980469286.

Adding to 166101128 its reverse (821101661), we get a palindrome (987202789).

The spelling of 166101128 in words is "one hundred sixty-six million, one hundred one thousand, one hundred twenty-eight".