78855887458267 has 2 divisors, whose sum is σ = 78855887458268. Its totient is φ = 78855887458266.

The previous prime is 78855887458171. The next prime is 78855887458277. The reversal of 78855887458267 is 76285478855887.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78855887458267 - 2¹⁹ = 78855886933979 is a prime.

It is not a weakly prime, because it can be changed into another prime (78855887458277) 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, 39427943729133 + 39427943729134.

It is an arithmetic number, because the mean of its divisors is an integer number (39427943729134).

Almost surely, 2^{78855887458267} is an apocalyptic number.

78855887458267 is a deficient number, since it is larger than the sum of its proper divisors (1).

78855887458267 is an equidigital number, since it uses as much as digits as its factorization.

78855887458267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67436544000, while the sum is 88.

The spelling of 78855887458267 in words is "seventy-eight trillion, eight hundred fifty-five billion, eight hundred eighty-seven million, four hundred fifty-eight thousand, two hundred sixty-seven".