12879644832 has 144 divisors (see below), whose sum is σ = 37595638080. Its totient is φ = 4180248576.

The previous prime is 12879644831. The next prime is 12879644837. The reversal of 12879644832 is 23844697821.

12879644832 is a `hidden beast` number, since 1 + 2 + 87 + 96 + 448 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (12879644831) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4444408 + ... + 4447304.

It is an arithmetic number, because the mean of its divisors is an integer number (261080820).

Almost surely, 2^12879644832 is an apocalyptic number.

12879644832 is a gapful number since it is divisible by the number (12) 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 12879644832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18797819040).

12879644832 is an abundant number, since it is smaller than the sum of its proper divisors (24715993248).

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

12879644832 is a wasteful number, since it uses less digits than its factorization.

12879644832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3315 (or 3304 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The spelling of 12879644832 in words is "twelve billion, eight hundred seventy-nine million, six hundred forty-four thousand, eight hundred thirty-two".