12727821540 has 72 divisors (see below), whose sum is σ = 41456342592. Its totient is φ = 2909215680.

The previous prime is 12727821527. The next prime is 12727821553. The reversal of 12727821540 is 4512872721.

12727821540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12727821527) and next prime (12727821553).

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 23 ways as a sum of consecutive naturals, for example, 2161656 + ... + 2167535.

It is an arithmetic number, because the mean of its divisors is an integer number (575782536).

Almost surely, 2^12727821540 is an apocalyptic number.

12727821540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12727821540 is an abundant number, since it is smaller than the sum of its proper divisors (28728521052).

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

12727821540 is a wasteful number, since it uses less digits than its factorization.

12727821540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4329217 (or 4329208 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 39.

The spelling of 12727821540 in words is "twelve billion, seven hundred twenty-seven million, eight hundred twenty-one thousand, five hundred forty".