1305404000545 has 4 divisors (see below), whose sum is σ = 1566484800660. Its totient is φ = 1044323200432.

The previous prime is 1305404000543. The next prime is 1305404000561. The reversal of 1305404000545 is 5450004045031.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1010863343889 + 294540656656 = 1005417^2 + 542716^2 .

It is a cyclic number.

It is not a de Polignac number, because 1305404000545 - 2¹ = 1305404000543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1305404000543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130540400050 + ... + 130540400059.

It is an arithmetic number, because the mean of its divisors is an integer number (391621200165).

Almost surely, 2^{1305404000545} is an apocalyptic number.

It is an amenable number.

1305404000545 is a deficient number, since it is larger than the sum of its proper divisors (261080800115).

1305404000545 is an equidigital number, since it uses as much as digits as its factorization.

1305404000545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261080800114.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 1305404000545 its reverse (5450004045031), we get a palindrome (6755408045576).

The spelling of 1305404000545 in words is "one trillion, three hundred five billion, four hundred four million, five hundred forty-five", and thus it is an aban number.