454561001549 has 2 divisors, whose sum is σ = 454561001550. Its totient is φ = 454561001548.

The previous prime is 454561001539. The next prime is 454561001551. The reversal of 454561001549 is 945100165454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 426875369449 + 27685632100 = 653357^2 + 166390^2 .

It is a cyclic number.

It is not a de Polignac number, because 454561001549 - 2²⁸ = 454292566093 is a prime.

Together with 454561001551, 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 (454561001539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227280500774 + 227280500775.

It is an arithmetic number, because the mean of its divisors is an integer number (227280500775).

Almost surely, 2^454561001549 is an apocalyptic number.

It is an amenable number.

454561001549 is a deficient number, since it is larger than the sum of its proper divisors (1).

454561001549 is an equidigital number, since it uses as much as digits as its factorization.

454561001549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432000, while the sum is 44.

The spelling of 454561001549 in words is "four hundred fifty-four billion, five hundred sixty-one million, one thousand, five hundred forty-nine".