12906239724 has 144 divisors (see below), whose sum is σ = 39678912000. Its totient is φ = 3452917248.

The previous prime is 12906239719. The next prime is 12906239747. The reversal of 12906239724 is 42793260921.

12906239724 is a `hidden beast` number, since 12 + 9 + 0 + 623 + 9 + 7 + 2 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 12906239724.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 844947 + ... + 860085.

It is an arithmetic number, because the mean of its divisors is an integer number (275548000).

Almost surely, 2^12906239724 is an apocalyptic number.

12906239724 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12906239724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19839456000).

12906239724 is an abundant number, since it is smaller than the sum of its proper divisors (26772672276).

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

12906239724 is a wasteful number, since it uses less digits than its factorization.

12906239724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15372 (or 15367 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 12906239724 in words is "twelve billion, nine hundred six million, two hundred thirty-nine thousand, seven hundred twenty-four".