12324040511555 has 4 divisors (see below), whose sum is σ = 14788848613872. Its totient is φ = 9859232409240.

The previous prime is 12324040511507. The next prime is 12324040511561. The reversal of 12324040511555 is 55511504042321.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12324040511555 - 2⁶ = 12324040511491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1232404051151 + ... + 1232404051160.

It is an arithmetic number, because the mean of its divisors is an integer number (3697212153468).

Almost surely, 2^{12324040511555} is an apocalyptic number.

12324040511555 is a deficient number, since it is larger than the sum of its proper divisors (2464808102317).

12324040511555 is an equidigital number, since it uses as much as digits as its factorization.

12324040511555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2464808102316.

The product of its (nonzero) digits is 120000, while the sum is 38.

Adding to 12324040511555 its reverse (55511504042321), we get a palindrome (67835544553876).

The spelling of 12324040511555 in words is "twelve trillion, three hundred twenty-four billion, forty million, five hundred eleven thousand, five hundred fifty-five".