606521664321 has 64 divisors (see below), whose sum is σ = 891700358400. Its totient is φ = 365228752896.

The previous prime is 606521664317. The next prime is 606521664373. The reversal of 606521664321 is 123466125606.

It is not a de Polignac number, because 606521664321 - 2² = 606521664317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (606521664391) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 43700035 + ... + 43713911.

It is an arithmetic number, because the mean of its divisors is an integer number (13932818100).

Almost surely, 2^606521664321 is an apocalyptic number.

It is an amenable number.

606521664321 is a deficient number, since it is larger than the sum of its proper divisors (285178694079).

606521664321 is a wasteful number, since it uses less digits than its factorization.

606521664321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14258.

The product of its (nonzero) digits is 311040, while the sum is 42.

Adding to 606521664321 its reverse (123466125606), we get a palindrome (729987789927).

The spelling of 606521664321 in words is "six hundred six billion, five hundred twenty-one million, six hundred sixty-four thousand, three hundred twenty-one".