12724324380 has 72 divisors (see below), whose sum is σ = 38606454432. Its totient is φ = 3392332416.

The previous prime is 12724324331. The next prime is 12724324381. The reversal of 12724324380 is 8342342721.

It is a happy number.

12724324380 is a `hidden beast` number, since 1 + 272 + 4 + 3 + 2 + 4 + 380 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12724324381) 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, 1254409 + ... + 1264511.

It is an arithmetic number, because the mean of its divisors is an integer number (536200756).

Almost surely, 2^12724324380 is an apocalyptic number.

12724324380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12724324380 is an abundant number, since it is smaller than the sum of its proper divisors (25882130052).

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

12724324380 is a wasteful number, since it uses less digits than its factorization.

12724324380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17115 (or 17110 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The spelling of 12724324380 in words is "twelve billion, seven hundred twenty-four million, three hundred twenty-four thousand, three hundred eighty".