14664650221 has 8 divisors (see below), whose sum is σ = 15795138744. Its totient is φ = 13534510080.

The previous prime is 14664650213. The next prime is 14664650233. The reversal of 14664650221 is 12205646641.

It can be written as a sum of positive squares in 4 ways, for example, as 2615197321 + 12049452900 = 51139^2 + 109770^2 .

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

It is not a de Polignac number, because 14664650221 - 2³ = 14664650213 is a prime.

It is a super-2 number, since 2×14664650221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14664656221) 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, 3861 + ... + 171301.

It is an arithmetic number, because the mean of its divisors is an integer number (1974392343).

Almost surely, 2^14664650221 is an apocalyptic number.

It is an amenable number.

14664650221 is a deficient number, since it is larger than the sum of its proper divisors (1130488523).

14664650221 is a wasteful number, since it uses less digits than its factorization.

14664650221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174191.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 14664650221 in words is "fourteen billion, six hundred sixty-four million, six hundred fifty thousand, two hundred twenty-one".