610565555655 has 48 divisors (see below), whose sum is σ = 1215288397440. Its totient is φ = 280451160000.

The previous prime is 610565555629. The next prime is 610565555671. The reversal of 610565555655 is 556555565016.

610565555655 is a `hidden beast` number, since 6 + 10 + 5 + 65 + 5 + 5 + 565 + 5 = 666.

It is not a de Polignac number, because 610565555655 - 2⁸ = 610565555399 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32450221 + ... + 32469030.

It is an arithmetic number, because the mean of its divisors is an integer number (25318508280).

Almost surely, 2^610565555655 is an apocalyptic number.

610565555655 is a deficient number, since it is larger than the sum of its proper divisors (604722841785).

610565555655 is a wasteful number, since it uses less digits than its factorization.

610565555655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64919292 (or 64919289 counting only the distinct ones).

The product of its (nonzero) digits is 16875000, while the sum is 54.

The spelling of 610565555655 in words is "six hundred ten billion, five hundred sixty-five million, five hundred fifty-five thousand, six hundred fifty-five".