78506634575063 has 16 divisors (see below), whose sum is σ = 81231384674304. Its totient is φ = 75832152863040.

The previous prime is 78506634575053. The next prime is 78506634575069. The reversal of 78506634575063 is 36057543660587.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 78506634575063 - 2⁶ = 78506634574999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78506634575069) 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 in 15 ways as a sum of consecutive naturals, for example, 33290270 + ... + 35570427.

It is an arithmetic number, because the mean of its divisors is an integer number (5076961542144).

Almost surely, 2^{78506634575063} is an apocalyptic number.

78506634575063 is a deficient number, since it is larger than the sum of its proper divisors (2724750099241).

78506634575063 is a wasteful number, since it uses less digits than its factorization.

78506634575063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68861062.

The product of its (nonzero) digits is 381024000, while the sum is 65.

The spelling of 78506634575063 in words is "seventy-eight trillion, five hundred six billion, six hundred thirty-four million, five hundred seventy-five thousand, sixty-three".