4055005666 has 4 divisors (see below), whose sum is σ = 6082508502. Its totient is φ = 2027502832.

The previous prime is 4055005637. The next prime is 4055005681. The reversal of 4055005666 is 6665005504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3093695641 + 961310025 = 55621^2 + 31005^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1013751415 + ... + 1013751418.

Almost surely, 2^4055005666 is an apocalyptic number.

4055005666 is a deficient number, since it is larger than the sum of its proper divisors (2027502836).

4055005666 is a wasteful number, since it uses less digits than its factorization.

4055005666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027502835.

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 4055005666 is about 63678.9263885628. The cubic root of 4055005666 is about 1594.6442888201.

The spelling of 4055005666 in words is "four billion, fifty-five million, five thousand, six hundred sixty-six".