12919838508 has 36 divisors (see below), whose sum is σ = 32752629000. Its totient is φ = 4294197696.

The previous prime is 12919838501. The next prime is 12919838509. The reversal of 12919838508 is 80583891921.

12919838508 is a `hidden beast` number, since 12 + 9 + 1 + 98 + 38 + 508 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (12919838501) 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 11 ways as a sum of consecutive naturals, for example, 504633 + ... + 529616.

It is an arithmetic number, because the mean of its divisors is an integer number (909795250).

Almost surely, 2^12919838508 is an apocalyptic number.

12919838508 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12919838508 is an abundant number, since it is smaller than the sum of its proper divisors (19832790492).

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

12919838508 is a wasteful number, since it uses less digits than its factorization.

12919838508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034606 (or 1034601 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 54.

The spelling of 12919838508 in words is "twelve billion, nine hundred nineteen million, eight hundred thirty-eight thousand, five hundred eight".