11502312543 has 12 divisors (see below), whose sum is σ = 17187363960. Its totient is φ = 7403787216.

The previous prime is 11502312539. The next prime is 11502312553. The reversal of 11502312543 is 34521320511.

11502312543 is a `hidden beast` number, since 115 + 0 + 2 + 3 + 1 + 2 + 543 = 666.

It is not a de Polignac number, because 11502312543 - 2² = 11502312539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11502312553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22034821 + ... + 22035342.

It is an arithmetic number, because the mean of its divisors is an integer number (1432280330).

Almost surely, 2^11502312543 is an apocalyptic number.

11502312543 is a deficient number, since it is larger than the sum of its proper divisors (5685051417).

11502312543 is a wasteful number, since it uses less digits than its factorization.

11502312543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44070198 (or 44070195 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The spelling of 11502312543 in words is "eleven billion, five hundred two million, three hundred twelve thousand, five hundred forty-three".