5121331138 has 24 divisors (see below), whose sum is σ = 9748584144. Its totient is φ = 1995323400.

The previous prime is 5121331129. The next prime is 5121331139. The reversal of 5121331138 is 8311331215.

It is not an unprimeable number, because it can be changed into a prime (5121331139) 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, 2374308 + ... + 2376463.

It is an arithmetic number, because the mean of its divisors is an integer number (406191006).

Almost surely, 2^5121331138 is an apocalyptic number.

5121331138 is a deficient number, since it is larger than the sum of its proper divisors (4627253006).

5121331138 is a wasteful number, since it uses less digits than its factorization.

5121331138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4750798 (or 4750791 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 5121331138 is about 71563.4762850436. The cubic root of 5121331138 is about 1723.6971062643.

The spelling of 5121331138 in words is "five billion, one hundred twenty-one million, three hundred thirty-one thousand, one hundred thirty-eight".