135151563565 has 4 divisors (see below), whose sum is σ = 162181876284. Its totient is φ = 108121250848.

The previous prime is 135151563563. The next prime is 135151563571. The reversal of 135151563565 is 565365151531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 565365151531 = 3049 ⋅185426419.

It can be written as a sum of positive squares in 2 ways, for example, as 60446647881 + 74704915684 = 245859^2 + 273322^2 .

It is a cyclic number.

It is not a de Polignac number, because 135151563565 - 2¹ = 135151563563 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135151563563) 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 in 3 ways as a sum of consecutive naturals, for example, 13515156352 + ... + 13515156361.

It is an arithmetic number, because the mean of its divisors is an integer number (40545469071).

Almost surely, 2^135151563565 is an apocalyptic number.

It is an amenable number.

135151563565 is a deficient number, since it is larger than the sum of its proper divisors (27030312719).

135151563565 is an equidigital number, since it uses as much as digits as its factorization.

135151563565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27030312718.

The product of its digits is 1012500, while the sum is 46.

The spelling of 135151563565 in words is "one hundred thirty-five billion, one hundred fifty-one million, five hundred sixty-three thousand, five hundred sixty-five".