78625134855 has 12 divisors (see below), whose sum is σ = 136283567160. Its totient is φ = 41933405232.

The previous prime is 78625134853. The next prime is 78625134869. The reversal of 78625134855 is 55843152687.

78625134855 is a `hidden beast` number, since 7 + 8 + 625 + 1 + 3 + 4 + 8 + 5 + 5 = 666.

It is not a de Polignac number, because 78625134855 - 2¹ = 78625134853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78625134851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 873612565 + ... + 873612654.

It is an arithmetic number, because the mean of its divisors is an integer number (11356963930).

Almost surely, 2^78625134855 is an apocalyptic number.

78625134855 is a deficient number, since it is larger than the sum of its proper divisors (57658432305).

78625134855 is a wasteful number, since it uses less digits than its factorization.

78625134855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747225230 (or 1747225227 counting only the distinct ones).

The product of its digits is 8064000, while the sum is 54.

The spelling of 78625134855 in words is "seventy-eight billion, six hundred twenty-five million, one hundred thirty-four thousand, eight hundred fifty-five".