13123443508 has 24 divisors (see below), whose sum is σ = 26887057344. Its totient is φ = 5487153600.

The previous prime is 13123443461. The next prime is 13123443517. The reversal of 13123443508 is 80534432131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5714638 + ... + 5716933.

It is an arithmetic number, because the mean of its divisors is an integer number (1120294056).

Almost surely, 2^13123443508 is an apocalyptic number.

It is an amenable number.

13123443508 is an abundant number, since it is smaller than the sum of its proper divisors (13763613836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13123443508 is a wasteful number, since it uses less digits than its factorization.

13123443508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11431623 (or 11431621 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 13123443508 its reverse (80534432131), we get a palindrome (93657875639).

The spelling of 13123443508 in words is "thirteen billion, one hundred twenty-three million, four hundred forty-three thousand, five hundred eight".