12871397120 has 72 divisors (see below), whose sum is σ = 31894248960. Its totient is φ = 4971008000.

The previous prime is 12871397113. The next prime is 12871397137. The reversal of 12871397120 is 2179317821.

It is a happy number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 136256 + ... + 210495.

It is an arithmetic number, because the mean of its divisors is an integer number (442975680).

Almost surely, 2^12871397120 is an apocalyptic number.

12871397120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12871397120 is an abundant number, since it is smaller than the sum of its proper divisors (19022851840).

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

12871397120 is an equidigital number, since it uses as much as digits as its factorization.

12871397120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346801 (or 346787 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 41.

The spelling of 12871397120 in words is "twelve billion, eight hundred seventy-one million, three hundred ninety-seven thousand, one hundred twenty".