12647379200 has 108 divisors (see below), whose sum is σ = 31372593588. Its totient is φ = 5047910400.

The previous prime is 12647379193. The next prime is 12647379209. The reversal of 12647379200 is 297374621.

It can be written as a sum of positive squares in 6 ways, for example, as 2148507904 + 10498871296 = 46352^2 + 102464^2 .

It is not an unprimeable number, because it can be changed into a prime (12647379209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3332504 + ... + 3336296.

Almost surely, 2^12647379200 is an apocalyptic number.

12647379200 is a gapful number since it is divisible by the number (10) 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 12647379200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15686296794).

12647379200 is an abundant number, since it is smaller than the sum of its proper divisors (18725214388).

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

12647379200 is an equidigital number, since it uses as much as digits as its factorization.

12647379200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4340 (or 4321 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 41.

The spelling of 12647379200 in words is "twelve billion, six hundred forty-seven million, three hundred seventy-nine thousand, two hundred".