12720256963 has 2 divisors, whose sum is σ = 12720256964. Its totient is φ = 12720256962.

The previous prime is 12720256957. The next prime is 12720256993. The reversal of 12720256963 is 36965202721.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12720256963 is a prime.

It is not a weakly prime, because it can be changed into another prime (12720256993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6360128481 + 6360128482.

It is an arithmetic number, because the mean of its divisors is an integer number (6360128482).

Almost surely, 2^12720256963 is an apocalyptic number.

12720256963 is a deficient number, since it is larger than the sum of its proper divisors (1).

12720256963 is an equidigital number, since it uses as much as digits as its factorization.

12720256963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 12720256963 in words is "twelve billion, seven hundred twenty million, two hundred fifty-six thousand, nine hundred sixty-three".