12720256967 has 16 divisors (see below), whose sum is σ = 14007216384. Its totient is φ = 11455416000.

The previous prime is 12720256963. The next prime is 12720256993. The reversal of 12720256967 is 76965202721.

It is a cyclic number.

It is not a de Polignac number, because 12720256967 - 2² = 12720256963 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12720256963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 731342 + ... + 748532.

It is an arithmetic number, because the mean of its divisors is an integer number (875451024).

Almost surely, 2^12720256967 is an apocalyptic number.

12720256967 is a deficient number, since it is larger than the sum of its proper divisors (1286959417).

12720256967 is a wasteful number, since it uses less digits than its factorization.

12720256967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17830.

The product of its (nonzero) digits is 635040, while the sum is 47.

The spelling of 12720256967 in words is "twelve billion, seven hundred twenty million, two hundred fifty-six thousand, nine hundred sixty-seven".