12720256964 has 24 divisors (see below), whose sum is σ = 22646711808. Its totient is φ = 6250571360.

The previous prime is 12720256963. The next prime is 12720256993. The reversal of 12720256964 is 46965202721.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36887 + ... + 163710.

It is an arithmetic number, because the mean of its divisors is an integer number (943612992).

Almost surely, 2^12720256964 is an apocalyptic number.

It is an amenable number.

12720256964 is a deficient number, since it is larger than the sum of its proper divisors (9926454844).

12720256964 is a wasteful number, since it uses less digits than its factorization.

12720256964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200875 (or 200873 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 12720256964 in words is "twelve billion, seven hundred twenty million, two hundred fifty-six thousand, nine hundred sixty-four".