1361250405013 has 2 divisors, whose sum is σ = 1361250405014. Its totient is φ = 1361250405012.

The previous prime is 1361250405007. The next prime is 1361250405049. The reversal of 1361250405013 is 3105040521631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1040353080529 + 320897324484 = 1019977^2 + 566478^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361250405013 - 2⁵ = 1361250404981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1361650405013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680625202506 + 680625202507.

It is an arithmetic number, because the mean of its divisors is an integer number (680625202507).

Almost surely, 2^{1361250405013} is an apocalyptic number.

It is an amenable number.

1361250405013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361250405013 is an equidigital number, since it uses as much as digits as its factorization.

1361250405013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 1361250405013 its reverse (3105040521631), we get a palindrome (4466290926644).

The spelling of 1361250405013 in words is "one trillion, three hundred sixty-one billion, two hundred fifty million, four hundred five thousand, thirteen".