1336558961609 has 2 divisors, whose sum is σ = 1336558961610. Its totient is φ = 1336558961608.

The previous prime is 1336558961587. The next prime is 1336558961677. The reversal of 1336558961609 is 9061698556331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 862186531600 + 474372430009 = 928540^2 + 688747^2 .

It is a cyclic number.

It is not a de Polignac number, because 1336558961609 - 2⁴⁰ = 237047333833 is a prime.

It is not a weakly prime, because it can be changed into another prime (1336558969609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 668279480804 + 668279480805.

It is an arithmetic number, because the mean of its divisors is an integer number (668279480805).

Almost surely, 2^{1336558961609} is an apocalyptic number.

It is an amenable number.

1336558961609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1336558961609 is an equidigital number, since it uses as much as digits as its factorization.

1336558961609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31492800, while the sum is 62.

The spelling of 1336558961609 in words is "one trillion, three hundred thirty-six billion, five hundred fifty-eight million, nine hundred sixty-one thousand, six hundred nine".