1315260850109 has 2 divisors, whose sum is σ = 1315260850110. Its totient is φ = 1315260850108.

The previous prime is 1315260850069. The next prime is 1315260850157. The reversal of 1315260850109 is 9010580625131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1313366424484 + 1894425625 = 1146022^2 + 43525^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315260850109 - 2¹² = 1315260846013 is a prime.

It is a super-2 number, since 2×1315260850109² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315260855109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657630425054 + 657630425055.

It is an arithmetic number, because the mean of its divisors is an integer number (657630425055).

Almost surely, 2^{1315260850109} is an apocalyptic number.

It is an amenable number.

1315260850109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315260850109 is an equidigital number, since it uses as much as digits as its factorization.

1315260850109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 41.

The spelling of 1315260850109 in words is "one trillion, three hundred fifteen billion, two hundred sixty million, eight hundred fifty thousand, one hundred nine".