11155243442 has 64 divisors (see below), whose sum is σ = 20046635520. Its totient is φ = 4556238336.

The previous prime is 11155243441. The next prime is 11155243459. The reversal of 11155243442 is 24434255111.

It is a junction number, because it is equal to n+sod(n) for n = 11155243399 and 11155243408.

It is not an unprimeable number, because it can be changed into a prime (11155243441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5935859 + ... + 5937737.

It is an arithmetic number, because the mean of its divisors is an integer number (313228680).

Almost surely, 2^11155243442 is an apocalyptic number.

11155243442 is a deficient number, since it is larger than the sum of its proper divisors (8891392078).

11155243442 is a wasteful number, since it uses less digits than its factorization.

11155243442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2155.

The product of its digits is 19200, while the sum is 32.

Adding to 11155243442 its reverse (24434255111), we get a palindrome (35589498553).

The spelling of 11155243442 in words is "eleven billion, one hundred fifty-five million, two hundred forty-three thousand, four hundred forty-two".