4415123666 has 12 divisors (see below), whose sum is σ = 6685192878. Its totient is φ = 2186919072.

The previous prime is 4415123623. The next prime is 4415123681. The reversal of 4415123666 is 6663215144.

It can be written as a sum of positive squares in only one way, i.e., 3036561025 + 1378562641 = 55105^2 + 37129^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73511 + ... + 119306.

Almost surely, 2^4415123666 is an apocalyptic number.

4415123666 is a deficient number, since it is larger than the sum of its proper divisors (2270069212).

4415123666 is a wasteful number, since it uses less digits than its factorization.

4415123666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193033 (or 192926 counting only the distinct ones).

The product of its digits is 103680, while the sum is 38.

The square root of 4415123666 is about 66446.3969376820. The cubic root of 4415123666 is about 1640.5178398923.

The spelling of 4415123666 in words is "four billion, four hundred fifteen million, one hundred twenty-three thousand, six hundred sixty-six".