135521014567 has 2 divisors, whose sum is σ = 135521014568. Its totient is φ = 135521014566.

The previous prime is 135521014507. The next prime is 135521014609. The reversal of 135521014567 is 765410125531.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135521014567 - 2³¹ = 133373530919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135521014507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67760507283 + 67760507284.

It is an arithmetic number, because the mean of its divisors is an integer number (67760507284).

Almost surely, 2^135521014567 is an apocalyptic number.

135521014567 is a deficient number, since it is larger than the sum of its proper divisors (1).

135521014567 is an equidigital number, since it uses as much as digits as its factorization.

135521014567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126000, while the sum is 40.

The spelling of 135521014567 in words is "one hundred thirty-five billion, five hundred twenty-one million, fourteen thousand, five hundred sixty-seven".