1339645878413 has 2 divisors, whose sum is σ = 1339645878414. Its totient is φ = 1339645878412.

The previous prime is 1339645878367. The next prime is 1339645878443. The reversal of 1339645878413 is 3148785469331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1163781391369 + 175864487044 = 1078787^2 + 419362^2 .

It is a cyclic number.

It is not a de Polignac number, because 1339645878413 - 2⁶ = 1339645878349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1339645878443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669822939206 + 669822939207.

It is an arithmetic number, because the mean of its divisors is an integer number (669822939207).

Almost surely, 2^{1339645878413} is an apocalyptic number.

It is an amenable number.

1339645878413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1339645878413 is an equidigital number, since it uses as much as digits as its factorization.

1339645878413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52254720, while the sum is 62.

The spelling of 1339645878413 in words is "one trillion, three hundred thirty-nine billion, six hundred forty-five million, eight hundred seventy-eight thousand, four hundred thirteen".