12384021145505 has 16 divisors (see below), whose sum is σ = 14915406366864. Its totient is φ = 9870834059520.

The previous prime is 12384021145481. The next prime is 12384021145577. The reversal of 12384021145505 is 50554112048321.

It can be written as a sum of positive squares in 8 ways, for example, as 7429336913761 + 4954684231744 = 2725681^2 + 2225912^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12384021145505 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22571735 + ... + 23113875.

It is an arithmetic number, because the mean of its divisors is an integer number (932212897929).

Almost surely, 2^{12384021145505} is an apocalyptic number.

It is an amenable number.

12384021145505 is a deficient number, since it is larger than the sum of its proper divisors (2531385221359).

12384021145505 is a wasteful number, since it uses less digits than its factorization.

12384021145505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558916.

The product of its (nonzero) digits is 192000, while the sum is 41.

The spelling of 12384021145505 in words is "twelve trillion, three hundred eighty-four billion, twenty-one million, one hundred forty-five thousand, five hundred five".