5187138336 has 72 divisors (see below), whose sum is σ = 15149629404. Its totient is φ = 1682311680.

The previous prime is 5187138323. The next prime is 5187138337. The reversal of 5187138336 is 6338317815.

5187138336 is a `hidden beast` number, since 5 + 187 + 138 + 336 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4919619600 + 267518736 = 70140^2 + 16356^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 5187138291 and 5187138300.

It is not an unprimeable number, because it can be changed into a prime (5187138337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 232735 + ... + 254046.

Almost surely, 2^5187138336 is an apocalyptic number.

It is an amenable number.

5187138336 is an abundant number, since it is smaller than the sum of its proper divisors (9962491068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5187138336 is a wasteful number, since it uses less digits than its factorization.

5187138336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486834 (or 486823 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 5187138336 is about 72021.7907025367. The cubic root of 5187138336 is about 1731.0486626614.

The spelling of 5187138336 in words is "five billion, one hundred eighty-seven million, one hundred thirty-eight thousand, three hundred thirty-six".