1308729136069 has 2 divisors, whose sum is σ = 1308729136070. Its totient is φ = 1308729136068.

The previous prime is 1308729136063. The next prime is 1308729136087. The reversal of 1308729136069 is 9606319278031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1217789496225 + 90939639844 = 1103535^2 + 301562^2 .

It is a cyclic number.

It is not a de Polignac number, because 1308729136069 - 2¹³ = 1308729127877 is a prime.

It is a super-2 number, since 2×1308729136069² (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 (1308729136063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 654364568034 + 654364568035.

It is an arithmetic number, because the mean of its divisors is an integer number (654364568035).

Almost surely, 2^{1308729136069} is an apocalyptic number.

It is an amenable number.

1308729136069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1308729136069 is an equidigital number, since it uses as much as digits as its factorization.

1308729136069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The spelling of 1308729136069 in words is "one trillion, three hundred eight billion, seven hundred twenty-nine million, one hundred thirty-six thousand, sixty-nine".