123636145255 has 16 divisors (see below), whose sum is σ = 170795799360. Its totient is φ = 84160242432.

The previous prime is 123636145249. The next prime is 123636145309. The reversal of 123636145255 is 552541636321.

It is not a de Polignac number, because 123636145255 - 2²⁹ = 123099274343 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, 12887400 + ... + 12896989.

It is an arithmetic number, because the mean of its divisors is an integer number (10674737460).

Almost surely, 2^123636145255 is an apocalyptic number.

123636145255 is a deficient number, since it is larger than the sum of its proper divisors (47159654105).

123636145255 is a wasteful number, since it uses less digits than its factorization.

123636145255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25784538.

The product of its digits is 648000, while the sum is 43.

The spelling of 123636145255 in words is "one hundred twenty-three billion, six hundred thirty-six million, one hundred forty-five thousand, two hundred fifty-five".