63878459923 has 2 divisors, whose sum is σ = 63878459924. Its totient is φ = 63878459922.

The previous prime is 63878459903. The next prime is 63878459927. The reversal of 63878459923 is 32995487836.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63878459923 - 2¹⁷ = 63878328851 is a prime.

It is not a weakly prime, because it can be changed into another prime (63878459927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31939229961 + 31939229962.

It is an arithmetic number, because the mean of its divisors is an integer number (31939229962).

Almost surely, 2^63878459923 is an apocalyptic number.

63878459923 is a deficient number, since it is larger than the sum of its proper divisors (1).

63878459923 is an equidigital number, since it uses as much as digits as its factorization.

63878459923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78382080, while the sum is 64.

The spelling of 63878459923 in words is "sixty-three billion, eight hundred seventy-eight million, four hundred fifty-nine thousand, nine hundred twenty-three".