1305641620453 has 2 divisors, whose sum is σ = 1305641620454. Its totient is φ = 1305641620452.

The previous prime is 1305641620319. The next prime is 1305641620477. The reversal of 1305641620453 is 3540261465031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 824315094724 + 481326525729 = 907918^2 + 693777^2 .

It is a cyclic number.

It is not a de Polignac number, because 1305641620453 - 2²¹ = 1305639523301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1305641620553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652820810226 + 652820810227.

It is an arithmetic number, because the mean of its divisors is an integer number (652820810227).

Almost surely, 2^{1305641620453} is an apocalyptic number.

It is an amenable number.

1305641620453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305641620453 is an equidigital number, since it uses as much as digits as its factorization.

1305641620453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 1305641620453 in words is "one trillion, three hundred five billion, six hundred forty-one million, six hundred twenty thousand, four hundred fifty-three".