135521422523 has 2 divisors, whose sum is σ = 135521422524. Its totient is φ = 135521422522.

The previous prime is 135521422507. The next prime is 135521422541. The reversal of 135521422523 is 325224125531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135521422523 - 2⁴ = 135521422507 is a prime.

It is not a weakly prime, because it can be changed into another prime (135521422573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67760711261 + 67760711262.

It is an arithmetic number, because the mean of its divisors is an integer number (67760711262).

Almost surely, 2^135521422523 is an apocalyptic number.

135521422523 is a deficient number, since it is larger than the sum of its proper divisors (1).

135521422523 is an equidigital number, since it uses as much as digits as its factorization.

135521422523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72000, while the sum is 35.

The spelling of 135521422523 in words is "one hundred thirty-five billion, five hundred twenty-one million, four hundred twenty-two thousand, five hundred twenty-three".