55671517205 has 16 divisors (see below), whose sum is σ = 68128043760. Its totient is φ = 43657256448.

The previous prime is 55671517147. The next prime is 55671517247. The reversal of 55671517205 is 50271517655.

It can be written as a sum of positive squares in 8 ways, for example, as 12327121 + 55659190084 = 3511^2 + 235922^2 .

It is a cyclic number.

It is not a de Polignac number, because 55671517205 - 2⁶ = 55671517141 is a prime.

It is a super-2 number, since 2×55671517205² (a number of 22 digits) contains 22 as substring.

It is a congruent 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, 199169 + ... + 388601.

It is an arithmetic number, because the mean of its divisors is an integer number (4258002735).

Almost surely, 2^55671517205 is an apocalyptic number.

It is an amenable number.

55671517205 is a deficient number, since it is larger than the sum of its proper divisors (12456526555).

55671517205 is a wasteful number, since it uses less digits than its factorization.

55671517205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190600.

The product of its (nonzero) digits is 367500, while the sum is 44.

The spelling of 55671517205 in words is "fifty-five billion, six hundred seventy-one million, five hundred seventeen thousand, two hundred five".