166661500001124 has 24 divisors (see below), whose sum is σ = 409344035091040. Its totient is φ = 52629947368704.

The previous prime is 166661500001111. The next prime is 166661500001167. The reversal of 166661500001124 is 421100005166661.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365485745389 + ... + 365485745844.

Almost surely, 2^{166661500001124} is an apocalyptic number.

It is an amenable number.

166661500001124 is an abundant number, since it is smaller than the sum of its proper divisors (242682535089916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166661500001124 is a wasteful number, since it uses less digits than its factorization.

166661500001124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730971491259 (or 730971491257 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

Adding to 166661500001124 its reverse (421100005166661), we get a palindrome (587761505167785).

The spelling of 166661500001124 in words is "one hundred sixty-six trillion, six hundred sixty-one billion, five hundred million, one thousand, one hundred twenty-four".