11155242506 has 4 divisors (see below), whose sum is σ = 16732863762. Its totient is φ = 5577621252.

The previous prime is 11155242499. The next prime is 11155242533. The reversal of 11155242506 is 60524255111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60524255111 = 2423 ⋅24979057.

It can be written as a sum of positive squares in only one way, i.e., 10319512225 + 835730281 = 101585^2 + 28909^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2788810625 + ... + 2788810628.

Almost surely, 2^11155242506 is an apocalyptic number.

11155242506 is a deficient number, since it is larger than the sum of its proper divisors (5577621256).

11155242506 is an equidigital number, since it uses as much as digits as its factorization.

11155242506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5577621255.

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 11155242506 its reverse (60524255111), we get a palindrome (71679497617).

The spelling of 11155242506 in words is "eleven billion, one hundred fifty-five million, two hundred forty-two thousand, five hundred six".