1345253361209 has 2 divisors, whose sum is σ = 1345253361210. Its totient is φ = 1345253361208.

The previous prime is 1345253361119. The next prime is 1345253361239. The reversal of 1345253361209 is 9021633525431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 763084361209 + 582169000000 = 873547^2 + 763000^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345253361209 - 2²⁴ = 1345236583993 is a prime.

It is a super-2 number, since 2×1345253361209² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1345253361209.

It is not a weakly prime, because it can be changed into another prime (1345253361239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672626680604 + 672626680605.

It is an arithmetic number, because the mean of its divisors is an integer number (672626680605).

Almost surely, 2^{1345253361209} is an apocalyptic number.

It is an amenable number.

1345253361209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345253361209 is an equidigital number, since it uses as much as digits as its factorization.

1345253361209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 583200, while the sum is 44.

The spelling of 1345253361209 in words is "one trillion, three hundred forty-five billion, two hundred fifty-three million, three hundred sixty-one thousand, two hundred nine".