136001535123 has 4 divisors (see below), whose sum is σ = 181335380168. Its totient is φ = 90667690080.

The previous prime is 136001535121. The next prime is 136001535139. The reversal of 136001535123 is 321535100631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321535100631 = 3 ⋅107178366877.

It is not a de Polignac number, because 136001535123 - 2¹ = 136001535121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136001535121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22666922518 + ... + 22666922523.

It is an arithmetic number, because the mean of its divisors is an integer number (45333845042).

Almost surely, 2^136001535123 is an apocalyptic number.

136001535123 is a deficient number, since it is larger than the sum of its proper divisors (45333845045).

136001535123 is an equidigital number, since it uses as much as digits as its factorization.

136001535123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45333845044.

The product of its (nonzero) digits is 8100, while the sum is 30.

Adding to 136001535123 its reverse (321535100631), we get a palindrome (457536635754).

The spelling of 136001535123 in words is "one hundred thirty-six billion, one million, five hundred thirty-five thousand, one hundred twenty-three".