123136243152135 has 16 divisors (see below), whose sum is σ = 199958556045696. Its totient is φ = 64692474013728.

The previous prime is 123136243152103. The next prime is 123136243152161. The reversal of 123136243152135 is 531251342631321.

It is not a de Polignac number, because 123136243152135 - 2⁵ = 123136243152103 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61261811509 + ... + 61261813518.

It is an arithmetic number, because the mean of its divisors is an integer number (12497409752856).

Almost surely, 2^{123136243152135} is an apocalyptic number.

123136243152135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123136243152135 is a deficient number, since it is larger than the sum of its proper divisors (76822312893561).

123136243152135 is a wasteful number, since it uses less digits than its factorization.

123136243152135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122523625102.

The product of its digits is 388800, while the sum is 42.

Adding to 123136243152135 its reverse (531251342631321), we get a palindrome (654387585783456).

The spelling of 123136243152135 in words is "one hundred twenty-three trillion, one hundred thirty-six billion, two hundred forty-three million, one hundred fifty-two thousand, one hundred thirty-five".