11823563518 has 16 divisors (see below), whose sum is σ = 19565448336. Its totient is φ = 5323930560.

The previous prime is 11823563513. The next prime is 11823563539. The reversal of 11823563518 is 81536532811.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11823563513) 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, 5544696 + ... + 5546827.

It is an arithmetic number, because the mean of its divisors is an integer number (1222840521).

Almost surely, 2^11823563518 is an apocalyptic number.

11823563518 is a deficient number, since it is larger than the sum of its proper divisors (7741884818).

11823563518 is a wasteful number, since it uses less digits than its factorization.

11823563518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11091579.

The product of its digits is 172800, while the sum is 43.

The spelling of 11823563518 in words is "eleven billion, eight hundred twenty-three million, five hundred sixty-three thousand, five hundred eighteen".