1345242305513 has 4 divisors (see below), whose sum is σ = 1381600205700. Its totient is φ = 1308884405328.

The previous prime is 1345242305483. The next prime is 1345242305521. The reversal of 1345242305513 is 3155032425431.

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 1265562000784 + 79680304729 = 1124972^2 + 282277^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345242305513 - 2¹⁰ = 1345242304489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1345245305513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18178950038 + ... + 18178950111.

It is an arithmetic number, because the mean of its divisors is an integer number (345400051425).

Almost surely, 2^{1345242305513} is an apocalyptic number.

It is an amenable number.

1345242305513 is a deficient number, since it is larger than the sum of its proper divisors (36357900187).

1345242305513 is an equidigital number, since it uses as much as digits as its factorization.

1345242305513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36357900186.

The product of its (nonzero) digits is 216000, while the sum is 38.

The spelling of 1345242305513 in words is "one trillion, three hundred forty-five billion, two hundred forty-two million, three hundred five thousand, five hundred thirteen".