135636664551 has 4 divisors (see below), whose sum is σ = 180848886072. Its totient is φ = 90424443032.

The previous prime is 135636664531. The next prime is 135636664567. The reversal of 135636664551 is 155466636531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155466636531 = 3 ⋅51822212177.

It is a cyclic number.

It is not a de Polignac number, because 135636664551 - 2²⁵ = 135603110119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135636664494 and 135636664503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135636664531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22606110756 + ... + 22606110761.

It is an arithmetic number, because the mean of its divisors is an integer number (45212221518).

Almost surely, 2^135636664551 is an apocalyptic number.

135636664551 is a deficient number, since it is larger than the sum of its proper divisors (45212221521).

135636664551 is an equidigital number, since it uses as much as digits as its factorization.

135636664551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45212221520.

The product of its digits is 5832000, while the sum is 51.

The spelling of 135636664551 in words is "one hundred thirty-five billion, six hundred thirty-six million, six hundred sixty-four thousand, five hundred fifty-one".