13641444123 has 16 divisors (see below), whose sum is σ = 18705163776. Its totient is φ = 8836668000.

The previous prime is 13641444107. The next prime is 13641444143. The reversal of 13641444123 is 32144414631.

It is not a de Polignac number, because 13641444123 - 2⁴ = 13641444107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13641444143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1540 + ... + 165182.

It is an arithmetic number, because the mean of its divisors is an integer number (1169072736).

Almost surely, 2^13641444123 is an apocalyptic number.

13641444123 is a deficient number, since it is larger than the sum of its proper divisors (5063719653).

13641444123 is a wasteful number, since it uses less digits than its factorization.

13641444123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164434.

The product of its digits is 27648, while the sum is 33.

Adding to 13641444123 its reverse (32144414631), we get a palindrome (45785858754).

The spelling of 13641444123 in words is "thirteen billion, six hundred forty-one million, four hundred forty-four thousand, one hundred twenty-three".