5178736785 has 16 divisors (see below), whose sum is σ = 8351225856. Its totient is φ = 2740243968.

The previous prime is 5178736781. The next prime is 5178736817. The reversal of 5178736785 is 5876378715.

It is not a de Polignac number, because 5178736785 - 2² = 5178736781 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5178736781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1357344 + ... + 1361153.

It is an arithmetic number, because the mean of its divisors is an integer number (521951616).

Almost surely, 2^5178736785 is an apocalyptic number.

It is an amenable number.

5178736785 is a deficient number, since it is larger than the sum of its proper divisors (3172489071).

5178736785 is a wasteful number, since it uses less digits than its factorization.

5178736785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2718632.

The product of its digits is 9878400, while the sum is 57.

The square root of 5178736785 is about 71963.4406139673. The cubic root of 5178736785 is about 1730.1135707905.

The spelling of 5178736785 in words is "five billion, one hundred seventy-eight million, seven hundred thirty-six thousand, seven hundred eighty-five".