5641138123 has 4 divisors (see below), whose sum is σ = 5641536600. Its totient is φ = 5640739648.

The previous prime is 5641138117. The next prime is 5641138163. The reversal of 5641138123 is 3218311465.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5641138123 - 2¹³ = 5641129931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5641138103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177190 + ... + 206587.

It is an arithmetic number, because the mean of its divisors is an integer number (1410384150).

Almost surely, 2^5641138123 is an apocalyptic number.

5641138123 is a deficient number, since it is larger than the sum of its proper divisors (398477).

5641138123 is a wasteful number, since it uses less digits than its factorization.

5641138123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398476.

The product of its digits is 17280, while the sum is 34.

The square root of 5641138123 is about 75107.5104300495. The cubic root of 5641138123 is about 1780.1458159172.

Adding to 5641138123 its reverse (3218311465), we get a palindrome (8859449588).

The spelling of 5641138123 in words is "five billion, six hundred forty-one million, one hundred thirty-eight thousand, one hundred twenty-three".