13123645263 has 6 divisors (see below), whose sum is σ = 18956376504. Its totient is φ = 8749096836.

The previous prime is 13123645217. The next prime is 13123645273. The reversal of 13123645263 is 36254632131.

13123645263 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 3 + 645 + 2 + 6 + 3 = 666.

It is not a de Polignac number, because 13123645263 - 2²² = 13119450959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123645273) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 729091395 + ... + 729091412.

It is an arithmetic number, because the mean of its divisors is an integer number (3159396084).

Almost surely, 2^13123645263 is an apocalyptic number.

13123645263 is a deficient number, since it is larger than the sum of its proper divisors (5832731241).

13123645263 is a wasteful number, since it uses less digits than its factorization.

13123645263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458182813 (or 1458182810 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The spelling of 13123645263 in words is "thirteen billion, one hundred twenty-three million, six hundred forty-five thousand, two hundred sixty-three".