1361250343637 has 2 divisors, whose sum is σ = 1361250343638. Its totient is φ = 1361250343636.

The previous prime is 1361250343597. The next prime is 1361250343751. The reversal of 1361250343637 is 7363430521631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 844402939396 + 516847404241 = 918914^2 + 718921^2 .

It is an emirp because it is prime and its reverse (7363430521631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1361250343637 - 2²⁴ = 1361233566421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1361250346637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680625171818 + 680625171819.

It is an arithmetic number, because the mean of its divisors is an integer number (680625171819).

Almost surely, 2^{1361250343637} is an apocalyptic number.

It is an amenable number.

1361250343637 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361250343637 is an equidigital number, since it uses as much as digits as its factorization.

1361250343637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 44.

The spelling of 1361250343637 in words is "one trillion, three hundred sixty-one billion, two hundred fifty million, three hundred forty-three thousand, six hundred thirty-seven".