78188608563 has 8 divisors (see below), whose sum is σ = 112270822608. Its totient is φ = 48116066784.

The previous prime is 78188608559. The next prime is 78188608601. The reversal of 78188608563 is 36580688187.

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

It is not a de Polignac number, because 78188608563 - 2² = 78188608559 is a prime.

It is a super-2 number, since 2×78188608563² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78188608497 and 78188608506.

It is not an unprimeable number, because it can be changed into a prime (78188678563) 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, 1002418020 + ... + 1002418097.

It is an arithmetic number, because the mean of its divisors is an integer number (14033852826).

Almost surely, 2^78188608563 is an apocalyptic number.

78188608563 is a deficient number, since it is larger than the sum of its proper divisors (34082214045).

78188608563 is a wasteful number, since it uses less digits than its factorization.

78188608563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004836133.

The product of its (nonzero) digits is 15482880, while the sum is 60.

The spelling of 78188608563 in words is "seventy-eight billion, one hundred eighty-eight million, six hundred eight thousand, five hundred sixty-three".