12005405255105 has 8 divisors (see below), whose sum is σ = 14678306802792. Its totient is φ = 9423110539648.

The previous prime is 12005405255099. The next prime is 12005405255113. The reversal of 12005405255105 is 50155250450021.

It can be written as a sum of positive squares in 4 ways, for example, as 270279373456 + 11735125881649 = 519884^2 + 3425657^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12005405255105 - 2³⁰ = 12004331513281 is a prime.

It is a super-2 number, since 2×12005405255105² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22651707764 + ... + 22651708293.

It is an arithmetic number, because the mean of its divisors is an integer number (1834788350349).

Almost surely, 2^{12005405255105} is an apocalyptic number.

It is an amenable number.

12005405255105 is a deficient number, since it is larger than the sum of its proper divisors (2672901547687).

12005405255105 is an equidigital number, since it uses as much as digits as its factorization.

12005405255105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45303416115.

The product of its (nonzero) digits is 50000, while the sum is 35.

The spelling of 12005405255105 in words is "twelve trillion, five billion, four hundred five million, two hundred fifty-five thousand, one hundred five".