13123987868 has 12 divisors (see below), whose sum is σ = 23203752432. Its totient is φ = 6494344320.

The previous prime is 13123987867. The next prime is 13123987873. The reversal of 13123987868 is 86878932131.

It is a super-2 number, since 2×13123987868² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123987867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16911968 + ... + 16912743.

It is an arithmetic number, because the mean of its divisors is an integer number (1933646036).

Almost surely, 2^13123987868 is an apocalyptic number.

It is an amenable number.

13123987868 is a deficient number, since it is larger than the sum of its proper divisors (10079764564).

13123987868 is a wasteful number, since it uses less digits than its factorization.

13123987868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33824812 (or 33824810 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 56.

The spelling of 13123987868 in words is "thirteen billion, one hundred twenty-three million, nine hundred eighty-seven thousand, eight hundred sixty-eight".