6663321522 has 96 divisors (see below), whose sum is σ = 17491930560. Its totient is φ = 1863838080.

The previous prime is 6663321487. The next prime is 6663321523. The reversal of 6663321522 is 2251233666.

It is not an unprimeable number, because it can be changed into a prime (6663321523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67198 + ... + 133574.

It is an arithmetic number, because the mean of its divisors is an integer number (182207610).

Almost surely, 2^6663321522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6663321522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8745965280).

6663321522 is an abundant number, since it is smaller than the sum of its proper divisors (10828609038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6663321522 is a wasteful number, since it uses less digits than its factorization.

6663321522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66425 (or 66406 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 6663321522 is about 81629.1707785887. The cubic root of 6663321522 is about 1881.7572149311.

The spelling of 6663321522 in words is "six billion, six hundred sixty-three million, three hundred twenty-one thousand, five hundred twenty-two".