12747870720 has 400 divisors, whose sum is σ = 49181461560. Its totient is φ = 3137273856.

The previous prime is 12747870713. The next prime is 12747870749. The reversal of 12747870720 is 2707874721.

It can be written as a sum of positive squares in 4 ways, for example, as 3959933184 + 8787937536 = 62928^2 + 93744^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2693316 + ... + 2698044.

Almost surely, 2^12747870720 is an apocalyptic number.

12747870720 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 12747870720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24590730780).

12747870720 is an abundant number, since it is smaller than the sum of its proper divisors (36433590840).

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

12747870720 is an equidigital number, since it uses as much as digits as its factorization.

12747870720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4777 (or 4752 counting only the distinct ones).

The product of its (nonzero) digits is 307328, while the sum is 45.

The spelling of 12747870720 in words is "twelve billion, seven hundred forty-seven million, eight hundred seventy thousand, seven hundred twenty".