11105449388 has 24 divisors (see below), whose sum is σ = 21207106704. Its totient is φ = 5046552000.

The previous prime is 11105449387. The next prime is 11105449417. The reversal of 11105449388 is 88394450111.

It is a super-2 number, since 2×11105449388² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (11105449387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138038 + ... + 203138.

It is an arithmetic number, because the mean of its divisors is an integer number (883629446).

Almost surely, 2^11105449388 is an apocalyptic number.

It is an amenable number.

11105449388 is a deficient number, since it is larger than the sum of its proper divisors (10101657316).

11105449388 is a wasteful number, since it uses less digits than its factorization.

11105449388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68993 (or 68991 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 44.

Adding to 11105449388 its reverse (88394450111), we get a palindrome (99499899499).

The spelling of 11105449388 in words is "eleven billion, one hundred five million, four hundred forty-nine thousand, three hundred eighty-eight".