135521014507 has 2 divisors, whose sum is σ = 135521014508. Its totient is φ = 135521014506.

The previous prime is 135521014417. The next prime is 135521014567. The reversal of 135521014507 is 705410125531.

It is a strong prime.

It is an emirp because it is prime and its reverse (705410125531) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135521014507 is a prime.

It is not a weakly prime, because it can be changed into another prime (135521014567) 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, 67760507253 + 67760507254.

It is an arithmetic number, because the mean of its divisors is an integer number (67760507254).

Almost surely, 2^135521014507 is an apocalyptic number.

135521014507 is a deficient number, since it is larger than the sum of its proper divisors (1).

135521014507 is an equidigital number, since it uses as much as digits as its factorization.

135521014507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21000, while the sum is 34.

The spelling of 135521014507 in words is "one hundred thirty-five billion, five hundred twenty-one million, fourteen thousand, five hundred seven".