6441453481 has 2 divisors, whose sum is σ = 6441453482. Its totient is φ = 6441453480.

The previous prime is 6441453479. The next prime is 6441453503. The reversal of 6441453481 is 1843541446.

6441453481 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6435248400 + 6205081 = 80220^2 + 2491^2 .

It is a cyclic number.

It is not a de Polignac number, because 6441453481 - 2¹ = 6441453479 is a prime.

It is a super-2 number, since 2×6441453481² = 82984645895774034722, which contains 22 as substring.

Together with 6441453479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6441453181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3220726740 + 3220726741.

It is an arithmetic number, because the mean of its divisors is an integer number (3220726741).

Almost surely, 2^6441453481 is an apocalyptic number.

It is an amenable number.

6441453481 is a deficient number, since it is larger than the sum of its proper divisors (1).

6441453481 is an equidigital number, since it uses as much as digits as its factorization.

6441453481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 184320, while the sum is 40.

The square root of 6441453481 is about 80258.6660803679. Note that the first 3 decimals coincide. The cubic root of 6441453481 is about 1860.6354518388.

The spelling of 6441453481 in words is "six billion, four hundred forty-one million, four hundred fifty-three thousand, four hundred eighty-one".