664330262211 has 24 divisors (see below), whose sum is σ = 1196369650944. Its totient is φ = 345106629360.

The previous prime is 664330262209. The next prime is 664330262221. The reversal of 664330262211 is 112262033466.

664330262211 is a `hidden beast` number, since 6 + 6 + 433 + 0 + 2 + 6 + 2 + 211 = 666.

It is not a de Polignac number, because 664330262211 - 2¹ = 664330262209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (664330262221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 479314071 + ... + 479315456.

It is an arithmetic number, because the mean of its divisors is an integer number (49848735456).

Almost surely, 2^664330262211 is an apocalyptic number.

664330262211 is a deficient number, since it is larger than the sum of its proper divisors (532039388733).

664330262211 is a wasteful number, since it uses less digits than its factorization.

664330262211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958629551 (or 958629548 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

Adding to 664330262211 its reverse (112262033466), we get a palindrome (776592295677).

The spelling of 664330262211 in words is "six hundred sixty-four billion, three hundred thirty million, two hundred sixty-two thousand, two hundred eleven".