6654433321 has 2 divisors, whose sum is σ = 6654433322. Its totient is φ = 6654433320.

The previous prime is 6654433271. The next prime is 6654433337. The reversal of 6654433321 is 1233344566.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6553712025 + 100721296 = 80955^2 + 10036^2 .

It is a cyclic number.

It is not a de Polignac number, because 6654433321 - 2²¹ = 6652336169 is a prime.

It is a nialpdrome in base 10.

It is not a weakly prime, because it can be changed into another prime (6654433021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3327216660 + 3327216661.

It is an arithmetic number, because the mean of its divisors is an integer number (3327216661).

Almost surely, 2^6654433321 is an apocalyptic number.

It is an amenable number.

6654433321 is a deficient number, since it is larger than the sum of its proper divisors (1).

6654433321 is an equidigital number, since it uses as much as digits as its factorization.

6654433321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 37.

The square root of 6654433321 is about 81574.7100577134. The cubic root of 6654433321 is about 1880.9201509882.

Adding to 6654433321 its reverse (1233344566), we get a palindrome (7887777887).

The spelling of 6654433321 in words is "six billion, six hundred fifty-four million, four hundred thirty-three thousand, three hundred twenty-one".