12729451240 has 32 divisors (see below), whose sum is σ = 31245017760. Its totient is φ = 4628891200.

The previous prime is 12729451201. The next prime is 12729451277. The reversal of 12729451240 is 4215492721.

12729451240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12729451240.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14464846 + ... + 14465725.

It is an arithmetic number, because the mean of its divisors is an integer number (976406805).

Almost surely, 2^12729451240 is an apocalyptic number.

12729451240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12729451240 is an abundant number, since it is smaller than the sum of its proper divisors (18515566520).

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

12729451240 is a wasteful number, since it uses less digits than its factorization.

12729451240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28930593 (or 28930589 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 12729451240 in words is "twelve billion, seven hundred twenty-nine million, four hundred fifty-one thousand, two hundred forty".