135436938269 has 2 divisors, whose sum is σ = 135436938270. Its totient is φ = 135436938268.

The previous prime is 135436938251. The next prime is 135436938323. The reversal of 135436938269 is 962839634531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90339319225 + 45097619044 = 300565^2 + 212362^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135436938269 is a prime.

It is a super-2 number, since 2×135436938269² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135436938209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67718469134 + 67718469135.

It is an arithmetic number, because the mean of its divisors is an integer number (67718469135).

Almost surely, 2^135436938269 is an apocalyptic number.

It is an amenable number.

135436938269 is a deficient number, since it is larger than the sum of its proper divisors (1).

135436938269 is an equidigital number, since it uses as much as digits as its factorization.

135436938269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25194240, while the sum is 59.

The spelling of 135436938269 in words is "one hundred thirty-five billion, four hundred thirty-six million, nine hundred thirty-eight thousand, two hundred sixty-nine".