135405307523 has 2 divisors, whose sum is σ = 135405307524. Its totient is φ = 135405307522.

The previous prime is 135405307507. The next prime is 135405307537. The reversal of 135405307523 is 325703504531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135405307523 - 2⁴ = 135405307507 is a prime.

It is not a weakly prime, because it can be changed into another prime (135405307423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67702653761 + 67702653762.

It is an arithmetic number, because the mean of its divisors is an integer number (67702653762).

Almost surely, 2^135405307523 is an apocalyptic number.

135405307523 is a deficient number, since it is larger than the sum of its proper divisors (1).

135405307523 is an equidigital number, since it uses as much as digits as its factorization.

135405307523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 189000, while the sum is 38.

The spelling of 135405307523 in words is "one hundred thirty-five billion, four hundred five million, three hundred seven thousand, five hundred twenty-three".