1345405424849 has 2 divisors, whose sum is σ = 1345405424850. Its totient is φ = 1345405424848.

The previous prime is 1345405424837. The next prime is 1345405424887. The reversal of 1345405424849 is 9484245045431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 680295040000 + 665110384849 = 824800^2 + 815543^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345405424849 - 2²⁴ = 1345388647633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1345405424849.

It is not a weakly prime, because it can be changed into another prime (1345405423849) 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 as a sum of consecutive naturals, namely, 672702712424 + 672702712425.

It is an arithmetic number, because the mean of its divisors is an integer number (672702712425).

Almost surely, 2^{1345405424849} is an apocalyptic number.

It is an amenable number.

1345405424849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345405424849 is an equidigital number, since it uses as much as digits as its factorization.

1345405424849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11059200, while the sum is 53.

The spelling of 1345405424849 in words is "one trillion, three hundred forty-five billion, four hundred five million, four hundred twenty-four thousand, eight hundred forty-nine".