11543326503 has 16 divisors (see below), whose sum is σ = 16263582720. Its totient is φ = 7267781664.

The previous prime is 11543326471. The next prime is 11543326511. The reversal of 11543326503 is 30562334511.

It is not a de Polignac number, because 11543326503 - 2⁵ = 11543326471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11543326523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1053376 + ... + 1064277.

It is an arithmetic number, because the mean of its divisors is an integer number (1016473920).

Almost surely, 2^11543326503 is an apocalyptic number.

11543326503 is a deficient number, since it is larger than the sum of its proper divisors (4720256217).

11543326503 is a wasteful number, since it uses less digits than its factorization.

11543326503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117758.

The product of its (nonzero) digits is 32400, while the sum is 33.

The spelling of 11543326503 in words is "eleven billion, five hundred forty-three million, three hundred twenty-six thousand, five hundred three".