55605505705 has 16 divisors (see below), whose sum is σ = 68003671824. Its totient is φ = 43633474560.

The previous prime is 55605505691. The next prime is 55605505723. The reversal of 55605505705 is 50750550655.

It can be written as a sum of positive squares in 8 ways, for example, as 2532404329 + 53073101376 = 50323^2 + 230376^2 .

It is not a de Polignac number, because 55605505705 - 2²⁹ = 55068634793 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, 1049245 + ... + 1100965.

It is an arithmetic number, because the mean of its divisors is an integer number (4250229489).

Almost surely, 2^55605505705 is an apocalyptic number.

It is an amenable number.

55605505705 is a deficient number, since it is larger than the sum of its proper divisors (12398166119).

55605505705 is a wasteful number, since it uses less digits than its factorization.

55605505705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55836.

The product of its (nonzero) digits is 656250, while the sum is 43.

The spelling of 55605505705 in words is "fifty-five billion, six hundred five million, five hundred five thousand, seven hundred five".