78677638563 has 8 divisors (see below), whose sum is σ = 104904832000. Its totient is φ = 52451102088.

The previous prime is 78677638553. The next prime is 78677638573. The reversal of 78677638563 is 36583677687.

It is an interprime number because it is at equal distance from previous prime (78677638553) and next prime (78677638573).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78677638563 - 2⁴ = 78677638547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78677638494 and 78677638503.

It is not an unprimeable number, because it can be changed into a prime (78677638553) 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 7 ways as a sum of consecutive naturals, for example, 314838 + ... + 506436.

It is an arithmetic number, because the mean of its divisors is an integer number (13113104000).

Almost surely, 2^78677638563 is an apocalyptic number.

78677638563 is a deficient number, since it is larger than the sum of its proper divisors (26227193437).

78677638563 is a wasteful number, since it uses less digits than its factorization.

78677638563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328481.

The product of its digits is 213373440, while the sum is 66.

The spelling of 78677638563 in words is "seventy-eight billion, six hundred seventy-seven million, six hundred thirty-eight thousand, five hundred sixty-three".