4816666221 has 8 divisors (see below), whose sum is σ = 6432945600. Its totient is φ = 3205748832.

The previous prime is 4816666213. The next prime is 4816666223. The reversal of 4816666221 is 1226666184.

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

It is not a de Polignac number, because 4816666221 - 2³ = 4816666213 is a prime.

It is a super-3 number, since 3×4816666221³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4816666223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1338400 + ... + 1341993.

It is an arithmetic number, because the mean of its divisors is an integer number (804118200).

Almost surely, 2^4816666221 is an apocalyptic number.

It is an amenable number.

4816666221 is a deficient number, since it is larger than the sum of its proper divisors (1616279379).

4816666221 is a wasteful number, since it uses less digits than its factorization.

4816666221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680995.

The product of its digits is 165888, while the sum is 42.

The square root of 4816666221 is about 69402.2061681039. The cubic root of 4816666221 is about 1688.8154135838.

The spelling of 4816666221 in words is "four billion, eight hundred sixteen million, six hundred sixty-six thousand, two hundred twenty-one".