78504567808163 has 24 divisors (see below), whose sum is σ = 90573722689632. Its totient is φ = 66654954503424.

The previous prime is 78504567808159. The next prime is 78504567808169. The reversal of 78504567808163 is 36180876540587.

It is not a de Polignac number, because 78504567808163 - 2² = 78504567808159 is a prime.

It is a Smith number, since the sum of its digits (68) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 78504567808093 and 78504567808102.

It is not an unprimeable number, because it can be changed into a prime (78504567808169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1097362331 + ... + 1097433867.

It is an arithmetic number, because the mean of its divisors is an integer number (3773905112068).

Almost surely, 2^{78504567808163} is an apocalyptic number.

78504567808163 is a deficient number, since it is larger than the sum of its proper divisors (12069154881469).

78504567808163 is a wasteful number, since it uses less digits than its factorization.

78504567808163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85451 (or 85344 counting only the distinct ones).

The product of its (nonzero) digits is 270950400, while the sum is 68.

The spelling of 78504567808163 in words is "seventy-eight trillion, five hundred four billion, five hundred sixty-seven million, eight hundred eight thousand, one hundred sixty-three".