12405645556385 has 16 divisors (see below), whose sum is σ = 15206715988992. Its totient is φ = 9711311160000.

The previous prime is 12405645556303. The next prime is 12405645556391. The reversal of 12405645556385 is 58365554650421.

It is not a de Polignac number, because 12405645556385 - 2³⁰ = 12404571814561 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 15 ways as a sum of consecutive naturals, for example, 4439186 + ... + 6672155.

It is an arithmetic number, because the mean of its divisors is an integer number (950419749312).

Almost surely, 2^{12405645556385} is an apocalyptic number.

It is an amenable number.

12405645556385 is a deficient number, since it is larger than the sum of its proper divisors (2801070432607).

12405645556385 is a wasteful number, since it uses less digits than its factorization.

12405645556385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11116144.

The product of its (nonzero) digits is 86400000, while the sum is 59.

The spelling of 12405645556385 in words is "twelve trillion, four hundred five billion, six hundred forty-five million, five hundred fifty-six thousand, three hundred eighty-five".