11523213603 has 16 divisors (see below), whose sum is σ = 18623376000. Its totient is φ = 6983765640.

The previous prime is 11523213587. The next prime is 11523213629. The reversal of 11523213603 is 30631232511.

11523213603 is a `hidden beast` number, since 1 + 1 + 52 + 3 + 2 + 1 + 3 + 603 = 666.

11523213603 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11523213603 - 2⁴ = 11523213587 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11523213703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19399053 + ... + 19399646.

It is an arithmetic number, because the mean of its divisors is an integer number (1163961000).

Almost surely, 2^11523213603 is an apocalyptic number.

11523213603 is a deficient number, since it is larger than the sum of its proper divisors (7100162397).

11523213603 is a wasteful number, since it uses less digits than its factorization.

11523213603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38798719 (or 38798713 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The spelling of 11523213603 in words is "eleven billion, five hundred twenty-three million, two hundred thirteen thousand, six hundred three".