12720752356 has 72 divisors (see below), whose sum is σ = 24411760800. Its totient is φ = 5797059840.

The previous prime is 12720752351. The next prime is 12720752371. The reversal of 12720752356 is 65325702721.

It is not an unprimeable number, because it can be changed into a prime (12720752351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31101880 + ... + 31102288.

Almost surely, 2^12720752356 is an apocalyptic number.

It is an amenable number.

12720752356 is a deficient number, since it is larger than the sum of its proper divisors (11691008444).

12720752356 is a wasteful number, since it uses less digits than its factorization.

12720752356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909 (or 894 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 40.

The spelling of 12720752356 in words is "twelve billion, seven hundred twenty million, seven hundred fifty-two thousand, three hundred fifty-six".