4472051666 has 8 divisors (see below), whose sum is σ = 6708377340. Its totient is φ = 2235925888.

The previous prime is 4472051663. The next prime is 4472051677. The reversal of 4472051666 is 6661502744.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4287499441 + 184552225 = 65479^2 + 13585^2 .

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

It is a super-2 number, since 2×4472051666² = 39998492206746751112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4472051663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34550 + ... + 100686.

Almost surely, 2^4472051666 is an apocalyptic number.

4472051666 is a deficient number, since it is larger than the sum of its proper divisors (2236325674).

4472051666 is a wasteful number, since it uses less digits than its factorization.

4472051666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99948.

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 4472051666 is about 66873.4002874087. The cubic root of 4472051666 is about 1647.5386215994.

The spelling of 4472051666 in words is "four billion, four hundred seventy-two million, fifty-one thousand, six hundred sixty-six".