1305440355541 has 12 divisors (see below), whose sum is σ = 1567559717760. Its totient is φ = 1082853749880.

The previous prime is 1305440355529. The next prime is 1305440355599. The reversal of 1305440355541 is 1455530445031.

It is not a de Polignac number, because 1305440355541 - 2¹³ = 1305440347349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1305440355494 and 1305440355503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305440355841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 429702351 + ... + 429705388.

It is an arithmetic number, because the mean of its divisors is an integer number (130629976480).

Almost surely, 2^{1305440355541} is an apocalyptic number.

It is an amenable number.

1305440355541 is a deficient number, since it is larger than the sum of its proper divisors (262119362219).

1305440355541 is an equidigital number, since it uses as much as digits as its factorization.

1305440355541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859407784 (or 859407777 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 1305440355541 in words is "one trillion, three hundred five billion, four hundred forty million, three hundred fifty-five thousand, five hundred forty-one".