78558542163 has 24 divisors (see below), whose sum is σ = 120116259120. Its totient is φ = 49390447680.

The previous prime is 78558542143. The next prime is 78558542173. The reversal of 78558542163 is 36124585587.

78558542163 is a `hidden beast` number, since 7 + 8 + 5 + 585 + 42 + 16 + 3 = 666.

It is not a de Polignac number, because 78558542163 - 2⁶ = 78558542099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78558542113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3488668 + ... + 3511113.

It is an arithmetic number, because the mean of its divisors is an integer number (5004844130).

Almost surely, 2^78558542163 is an apocalyptic number.

78558542163 is a deficient number, since it is larger than the sum of its proper divisors (41557716957).

78558542163 is a wasteful number, since it uses less digits than its factorization.

78558542163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6999859 (or 6999856 counting only the distinct ones).

The product of its digits is 8064000, while the sum is 54.

The spelling of 78558542163 in words is "seventy-eight billion, five hundred fifty-eight million, five hundred forty-two thousand, one hundred sixty-three".