12721740000 has 120 divisors (see below), whose sum is σ = 41730048360. Its totient is φ = 3392448000.

The previous prime is 12721739977. The next prime is 12721740001. The reversal of 12721740000 is 4712721.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12721740001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 46015 + ... + 166014.

It is an arithmetic number, because the mean of its divisors is an integer number (347750403).

Almost surely, 2^12721740000 is an apocalyptic number.

12721740000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12721740000 is an abundant number, since it is smaller than the sum of its proper divisors (29008308360).

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

12721740000 is an equidigital number, since it uses as much as digits as its factorization.

12721740000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212062 (or 212039 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 24.

The spelling of 12721740000 in words is "twelve billion, seven hundred twenty-one million, seven hundred forty thousand".