5111111138 has 16 divisors (see below), whose sum is σ = 8776845504. Its totient is φ = 2186741040.

The previous prime is 5111111101. The next prime is 5111111141. The reversal of 5111111138 is 8311111115.

It is a super-2 number, since 2×5111111138² = 52246914129975310088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302753 + ... + 319188.

It is an arithmetic number, because the mean of its divisors is an integer number (548552844).

Almost surely, 2^5111111138 is an apocalyptic number.

5111111138 is a deficient number, since it is larger than the sum of its proper divisors (3665734366).

5111111138 is a wasteful number, since it uses less digits than its factorization.

5111111138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622537.

The product of its digits is 120, while the sum is 23.

The square root of 5111111138 is about 71492.0354864792. The cubic root of 5111111138 is about 1722.5497538086.

Subtracting from 5111111138 its sum of digits (23), we obtain a palindrome (5111111115).

The spelling of 5111111138 in words is "five billion, one hundred eleven million, one hundred eleven thousand, one hundred thirty-eight".