11552743503 has 20 divisors (see below), whose sum is σ = 19723203280. Its totient is φ = 6601567392.

The previous prime is 11552743481. The next prime is 11552743549. The reversal of 11552743503 is 30534725511.

11552743503 is a `hidden beast` number, since 1 + 1 + 552 + 74 + 35 + 0 + 3 = 666.

It is not a de Polignac number, because 11552743503 - 2²⁹ = 11015872591 is a prime.

It is a super-2 number, since 2×11552743503² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11552743583) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10187038 + ... + 10188171.

It is an arithmetic number, because the mean of its divisors is an integer number (986160164).

Almost surely, 2^11552743503 is an apocalyptic number.

11552743503 is a deficient number, since it is larger than the sum of its proper divisors (8170459777).

11552743503 is an equidigital number, since it uses as much as digits as its factorization.

11552743503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20375228 (or 20375219 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The spelling of 11552743503 in words is "eleven billion, five hundred fifty-two million, seven hundred forty-three thousand, five hundred three".