4066688172 has 12 divisors (see below), whose sum is σ = 9488939096. Its totient is φ = 1355562720.

The previous prime is 4066688137. The next prime is 4066688189. The reversal of 4066688172 is 2718866604.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169445329 + ... + 169445352.

Almost surely, 2^4066688172 is an apocalyptic number.

It is an amenable number.

4066688172 is an abundant number, since it is smaller than the sum of its proper divisors (5422250924).

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

4066688172 is a wasteful number, since it uses less digits than its factorization.

4066688172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338890688 (or 338890686 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The square root of 4066688172 is about 63770.5901807408. The cubic root of 4066688172 is about 1596.1742151267.

The spelling of 4066688172 in words is "four billion, sixty-six million, six hundred eighty-eight thousand, one hundred seventy-two".