12871495616 has 126 divisors (see below), whose sum is σ = 30708532944. Its totient is φ = 5337158400.

The previous prime is 12871495537. The next prime is 12871495619. The reversal of 12871495616 is 61659417821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12871495619) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3011561 + ... + 3015831.

Almost surely, 2^12871495616 is an apocalyptic number.

12871495616 is a gapful number since it is divisible by the number (16) 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 12871495616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15354266472).

12871495616 is an abundant number, since it is smaller than the sum of its proper divisors (17837037328).

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

12871495616 is an equidigital number, since it uses as much as digits as its factorization.

12871495616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4359 (or 4311 counting only the distinct ones).

The product of its digits is 725760, while the sum is 50.

The spelling of 12871495616 in words is "twelve billion, eight hundred seventy-one million, four hundred ninety-five thousand, six hundred sixteen".