12956813603 has 2 divisors, whose sum is σ = 12956813604. Its totient is φ = 12956813602.

The previous prime is 12956813579. The next prime is 12956813627. The reversal of 12956813603 is 30631865921.

It is a balanced prime because it is at equal distance from previous prime (12956813579) and next prime (12956813627).

It is a cyclic number.

It is not a de Polignac number, because 12956813603 - 2²⁰ = 12955765027 is a prime.

It is not a weakly prime, because it can be changed into another prime (12956818603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6478406801 + 6478406802.

It is an arithmetic number, because the mean of its divisors is an integer number (6478406802).

Almost surely, 2^12956813603 is an apocalyptic number.

12956813603 is a deficient number, since it is larger than the sum of its proper divisors (1).

12956813603 is an equidigital number, since it uses as much as digits as its factorization.

12956813603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 12956813603 in words is "twelve billion, nine hundred fifty-six million, eight hundred thirteen thousand, six hundred three".