78563378187 has 24 divisors (see below), whose sum is σ = 129793618656. Its totient is φ = 44858157696.

The previous prime is 78563378183. The next prime is 78563378189. The reversal of 78563378187 is 78187336587.

78563378187 is a `hidden beast` number, since 7 + 85 + 6 + 3 + 378 + 187 = 666.

It is not a de Polignac number, because 78563378187 - 2² = 78563378183 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (78563378183) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 407818 + ... + 568719.

It is an arithmetic number, because the mean of its divisors is an integer number (5408067444).

Almost surely, 2^78563378187 is an apocalyptic number.

78563378187 is a deficient number, since it is larger than the sum of its proper divisors (51230240469).

78563378187 is a wasteful number, since it uses less digits than its factorization.

78563378187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977827 (or 977824 counting only the distinct ones).

The product of its digits is 47416320, while the sum is 63.

The spelling of 78563378187 in words is "seventy-eight billion, five hundred sixty-three million, three hundred seventy-eight thousand, one hundred eighty-seven".