63813262679 has 2 divisors, whose sum is σ = 63813262680. Its totient is φ = 63813262678.

The previous prime is 63813262589. The next prime is 63813262691. The reversal of 63813262679 is 97626231836.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63813262679 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63813262679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63813262699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31906631339 + 31906631340.

It is an arithmetic number, because the mean of its divisors is an integer number (31906631340).

Almost surely, 2^63813262679 is an apocalyptic number.

63813262679 is a deficient number, since it is larger than the sum of its proper divisors (1).

63813262679 is an equidigital number, since it uses as much as digits as its factorization.

63813262679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 53.

The spelling of 63813262679 in words is "sixty-three billion, eight hundred thirteen million, two hundred sixty-two thousand, six hundred seventy-nine".