63678278579 has 2 divisors, whose sum is σ = 63678278580. Its totient is φ = 63678278578.

The previous prime is 63678278569. The next prime is 63678278641. The reversal of 63678278579 is 97587287636.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63678278579 - 2¹² = 63678274483 is a prime.

It is not a weakly prime, because it can be changed into another prime (63678278539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31839139289 + 31839139290.

It is an arithmetic number, because the mean of its divisors is an integer number (31839139290).

Almost surely, 2^63678278579 is an apocalyptic number.

63678278579 is a deficient number, since it is larger than the sum of its proper divisors (1).

63678278579 is an equidigital number, since it uses as much as digits as its factorization.

63678278579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 213373440, while the sum is 68.

The spelling of 63678278579 in words is "sixty-three billion, six hundred seventy-eight million, two hundred seventy-eight thousand, five hundred seventy-nine".