11138439127 has 4 divisors (see below), whose sum is σ = 11410108416. Its totient is φ = 10866769840.

The previous prime is 11138439107. The next prime is 11138439131. The reversal of 11138439127 is 72193483111.

It is a happy number.

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 11138439127 - 2¹⁹ = 11137914839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11138439127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11138439107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135834583 + ... + 135834664.

It is an arithmetic number, because the mean of its divisors is an integer number (2852527104).

Almost surely, 2^11138439127 is an apocalyptic number.

11138439127 is a deficient number, since it is larger than the sum of its proper divisors (271669289).

11138439127 is an equidigital number, since it uses as much as digits as its factorization.

11138439127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271669288.

The product of its digits is 36288, while the sum is 40.

The spelling of 11138439127 in words is "eleven billion, one hundred thirty-eight million, four hundred thirty-nine thousand, one hundred twenty-seven".