12605040421705 has 8 divisors (see below), whose sum is σ = 15127136716104. Its totient is φ = 10083306864000.

The previous prime is 12605040421697. The next prime is 12605040421717. The reversal of 12605040421705 is 50712404050621.

It can be written as a sum of positive squares in 4 ways, for example, as 496568264976 + 12108472156729 = 704676^2 + 3479723^2 .

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

It is not a de Polignac number, because 12605040421705 - 2³ = 12605040421697 is a prime.

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, 90607716 + ... + 90746725.

It is an arithmetic number, because the mean of its divisors is an integer number (1890892089513).

Almost surely, 2^{12605040421705} is an apocalyptic number.

It is an amenable number.

12605040421705 is a deficient number, since it is larger than the sum of its proper divisors (2522096294399).

12605040421705 is a wasteful number, since it uses less digits than its factorization.

12605040421705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181368347.

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 12605040421705 in words is "twelve trillion, six hundred five billion, forty million, four hundred twenty-one thousand, seven hundred five".