136780504327717 has 2 divisors, whose sum is σ = 136780504327718. Its totient is φ = 136780504327716.

The previous prime is 136780504327697. The next prime is 136780504327741. The reversal of 136780504327717 is 717723405087631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132653243915361 + 4127260412356 = 11517519^2 + 2031566^2 .

It is an emirp because it is prime and its reverse (717723405087631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136780504327717 is a prime.

It is a super-2 number, since 2×136780504327717² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136780504627717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68390252163858 + 68390252163859.

It is an arithmetic number, because the mean of its divisors is an integer number (68390252163859).

Almost surely, 2^{136780504327717} is an apocalyptic number.

It is an amenable number.

136780504327717 is a deficient number, since it is larger than the sum of its proper divisors (1).

136780504327717 is an equidigital number, since it uses as much as digits as its factorization.

136780504327717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41489280, while the sum is 61.

The spelling of 136780504327717 in words is "one hundred thirty-six trillion, seven hundred eighty billion, five hundred four million, three hundred twenty-seven thousand, seven hundred seventeen".