12738215308 has 48 divisors (see below), whose sum is σ = 27551139840. Its totient is φ = 5018174784.

The previous prime is 12738215299. The next prime is 12738215317. The reversal of 12738215308 is 80351283721.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12738215299) and next prime (12738215317).

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 15 ways as a sum of consecutive naturals, for example, 13785 + ... + 160207.

It is an arithmetic number, because the mean of its divisors is an integer number (573982080).

Almost surely, 2^12738215308 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12738215308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13775569920).

12738215308 is an abundant number, since it is smaller than the sum of its proper divisors (14812924532).

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

12738215308 is a wasteful number, since it uses less digits than its factorization.

12738215308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146686 (or 146684 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 12738215308 in words is "twelve billion, seven hundred thirty-eight million, two hundred fifteen thousand, three hundred eight".