135321136369 has 2 divisors, whose sum is σ = 135321136370. Its totient is φ = 135321136368.

The previous prime is 135321136337. The next prime is 135321136421. The reversal of 135321136369 is 963631123531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130456771344 + 4864365025 = 361188^2 + 69745^2 .

It is a cyclic number.

It is not a de Polignac number, because 135321136369 - 2⁵ = 135321136337 is a prime.

It is a super-2 number, since 2×135321136369² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (135321136309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67660568184 + 67660568185.

It is an arithmetic number, because the mean of its divisors is an integer number (67660568185).

Almost surely, 2^135321136369 is an apocalyptic number.

It is an amenable number.

135321136369 is a deficient number, since it is larger than the sum of its proper divisors (1).

135321136369 is an equidigital number, since it uses as much as digits as its factorization.

135321136369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 262440, while the sum is 43.

The spelling of 135321136369 in words is "one hundred thirty-five billion, three hundred twenty-one million, one hundred thirty-six thousand, three hundred sixty-nine".