6445555453 has 2 divisors, whose sum is σ = 6445555454. Its totient is φ = 6445555452.

The previous prime is 6445555393. The next prime is 6445555531. The reversal of 6445555453 is 3545555446.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6445360089 + 195364 = 80283^2 + 442^2 .

It is a cyclic number.

It is not a de Polignac number, because 6445555453 - 2²⁵ = 6412001021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6445555553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3222777726 + 3222777727.

It is an arithmetic number, because the mean of its divisors is an integer number (3222777727).

Almost surely, 2^6445555453 is an apocalyptic number.

It is an amenable number.

6445555453 is a deficient number, since it is larger than the sum of its proper divisors (1).

6445555453 is an equidigital number, since it uses as much as digits as its factorization.

6445555453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600000, while the sum is 46.

The square root of 6445555453 is about 80284.2167116302. The cubic root of 6445555453 is about 1861.0303241567.

The spelling of 6445555453 in words is "six billion, four hundred forty-five million, five hundred fifty-five thousand, four hundred fifty-three".