78637675563 has 6 divisors (see below), whose sum is σ = 113587753604. Its totient is φ = 52425117036.

The previous prime is 78637675553. The next prime is 78637675573. The reversal of 78637675563 is 36557673687.

78637675563 is a `hidden beast` number, since 7 + 8 + 6 + 3 + 7 + 67 + 5 + 563 = 666.

It is an interprime number because it is at equal distance from previous prime (78637675553) and next prime (78637675573).

It is not a de Polignac number, because 78637675563 - 2⁸ = 78637675307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78637675563.

It is not an unprimeable number, because it can be changed into a prime (78637675553) 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 5 ways as a sum of consecutive naturals, for example, 4368759745 + ... + 4368759762.

Almost surely, 2^78637675563 is an apocalyptic number.

78637675563 is a deficient number, since it is larger than the sum of its proper divisors (34950078041).

78637675563 is a wasteful number, since it uses less digits than its factorization.

78637675563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8737519513 (or 8737519510 counting only the distinct ones).

The product of its digits is 133358400, while the sum is 63.

The spelling of 78637675563 in words is "seventy-eight billion, six hundred thirty-seven million, six hundred seventy-five thousand, five hundred sixty-three".