1305028805603 has 2 divisors, whose sum is σ = 1305028805604. Its totient is φ = 1305028805602.

The previous prime is 1305028805453. The next prime is 1305028805611. The reversal of 1305028805603 is 3065088205031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1305028805603 - 2³⁴ = 1287848936419 is a prime.

It is not a weakly prime, because it can be changed into another prime (1305028805653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652514402801 + 652514402802.

It is an arithmetic number, because the mean of its divisors is an integer number (652514402802).

Almost surely, 2^{1305028805603} is an apocalyptic number.

1305028805603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305028805603 is an equidigital number, since it uses as much as digits as its factorization.

1305028805603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 1305028805603 in words is "one trillion, three hundred five billion, twenty-eight million, eight hundred five thousand, six hundred three".