11551135543 has 8 divisors (see below), whose sum is σ = 11605352000. Its totient is φ = 11496971520.

The previous prime is 11551135511. The next prime is 11551135553. The reversal of 11551135543 is 34553115511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11551135543 - 2⁵ = 11551135511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11551135499 and 11551135508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11551135553) 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, 469771 + ... + 493747.

It is an arithmetic number, because the mean of its divisors is an integer number (1450669000).

Almost surely, 2^11551135543 is an apocalyptic number.

11551135543 is a deficient number, since it is larger than the sum of its proper divisors (54216457).

11551135543 is a wasteful number, since it uses less digits than its factorization.

11551135543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26217.

The product of its digits is 22500, while the sum is 34.

The spelling of 11551135543 in words is "eleven billion, five hundred fifty-one million, one hundred thirty-five thousand, five hundred forty-three".