4045556665 has 8 divisors (see below), whose sum is σ = 5110176960. Its totient is φ = 3066106032.

The previous prime is 4045556611. The next prime is 4045556743. The reversal of 4045556665 is 5666555404.

4045556665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4045556665 - 2⁹ = 4045556153 is a prime.

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, 21292309 + ... + 21292498.

It is an arithmetic number, because the mean of its divisors is an integer number (638772120).

Almost surely, 2^4045556665 is an apocalyptic number.

It is an amenable number.

4045556665 is a deficient number, since it is larger than the sum of its proper divisors (1064620295).

4045556665 is a wasteful number, since it uses less digits than its factorization.

4045556665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42584831.

The product of its (nonzero) digits is 2160000, while the sum is 46.

The square root of 4045556665 is about 63604.6905896098. The cubic root of 4045556665 is about 1593.4047086083.

The spelling of 4045556665 in words is "four billion, forty-five million, five hundred fifty-six thousand, six hundred sixty-five".