5135686178 has 40 divisors (see below), whose sum is σ = 9076752540. Its totient is φ = 2179010400.

The previous prime is 5135686163. The next prime is 5135686201. The reversal of 5135686178 is 8716865315.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5096960449 + 38725729 = 71393^2 + 6223^2 .

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 479708 + ... + 490296.

Almost surely, 2^5135686178 is an apocalyptic number.

5135686178 is a deficient number, since it is larger than the sum of its proper divisors (3941066362).

5135686178 is a wasteful number, since it uses less digits than its factorization.

5135686178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10720 (or 10699 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 50.

The square root of 5135686178 is about 71663.7019557321. The cubic root of 5135686178 is about 1725.3061057839.

The spelling of 5135686178 in words is "five billion, one hundred thirty-five million, six hundred eighty-six thousand, one hundred seventy-eight".