6453542453549 has 2 divisors, whose sum is σ = 6453542453550. Its totient is φ = 6453542453548.

The previous prime is 6453542453503. The next prime is 6453542453551. The reversal of 6453542453549 is 9453542453546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4802702931049 + 1650839522500 = 2191507^2 + 1284850^2 .

It is a cyclic number.

It is not a de Polignac number, because 6453542453549 - 2²⁴ = 6453525676333 is a prime.

Together with 6453542453551, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6453542456549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3226771226774 + 3226771226775.

It is an arithmetic number, because the mean of its divisors is an integer number (3226771226775).

Almost surely, 2^{6453542453549} is an apocalyptic number.

It is an amenable number.

6453542453549 is a deficient number, since it is larger than the sum of its proper divisors (1).

6453542453549 is an equidigital number, since it uses as much as digits as its factorization.

6453542453549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520000, while the sum is 59.

It can be divided in two parts, 645354 and 2453549, that added together give a palindrome (3098903).

The spelling of 6453542453549 in words is "six trillion, four hundred fifty-three billion, five hundred forty-two million, four hundred fifty-three thousand, five hundred forty-nine".