11115134556 has 24 divisors (see below), whose sum is σ = 26018183184. Its totient is φ = 3693206400.

The previous prime is 11115134519. The next prime is 11115134557. The reversal of 11115134556 is 65543151111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11115134557) 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, 1475895 + ... + 1483406.

It is an arithmetic number, because the mean of its divisors is an integer number (1084090966).

Almost surely, 2^11115134556 is an apocalyptic number.

It is an amenable number.

11115134556 is an abundant number, since it is smaller than the sum of its proper divisors (14903048628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11115134556 is a wasteful number, since it uses less digits than its factorization.

11115134556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2959621 (or 2959619 counting only the distinct ones).

The product of its digits is 9000, while the sum is 33.

Adding to 11115134556 its reverse (65543151111), we get a palindrome (76658285667).

The spelling of 11115134556 in words is "eleven billion, one hundred fifteen million, one hundred thirty-four thousand, five hundred fifty-six".