12641420263 has 2 divisors, whose sum is σ = 12641420264. Its totient is φ = 12641420262.

The previous prime is 12641420257. The next prime is 12641420369. The reversal of 12641420263 is 36202414621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12641420263 - 2¹³ = 12641412071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12641420203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6320710131 + 6320710132.

It is an arithmetic number, because the mean of its divisors is an integer number (6320710132).

Almost surely, 2^12641420263 is an apocalyptic number.

12641420263 is a deficient number, since it is larger than the sum of its proper divisors (1).

12641420263 is an equidigital number, since it uses as much as digits as its factorization.

12641420263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 12641420263 its reverse (36202414621), we get a palindrome (48843834884).

The spelling of 12641420263 in words is "twelve billion, six hundred forty-one million, four hundred twenty thousand, two hundred sixty-three".