11154224551 has 4 divisors (see below), whose sum is σ = 11364681672. Its totient is φ = 10943767432.

The previous prime is 11154224533. The next prime is 11154224561. The reversal of 11154224551 is 15542245111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11154224551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11154224561) 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, 105228481 + ... + 105228586.

It is an arithmetic number, because the mean of its divisors is an integer number (2841170418).

Almost surely, 2^11154224551 is an apocalyptic number.

11154224551 is a deficient number, since it is larger than the sum of its proper divisors (210457121).

11154224551 is an equidigital number, since it uses as much as digits as its factorization.

11154224551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210457120.

The product of its digits is 8000, while the sum is 31.

Adding to 11154224551 its reverse (15542245111), we get a palindrome (26696469662).

The spelling of 11154224551 in words is "eleven billion, one hundred fifty-four million, two hundred twenty-four thousand, five hundred fifty-one".