655553441665 has 16 divisors (see below), whose sum is σ = 816162462720. Its totient is φ = 504948951360.

The previous prime is 655553441617. The next prime is 655553441687. The reversal of 655553441665 is 566144355556.

It is not a de Polignac number, because 655553441665 - 2⁷ = 655553441537 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 10703925 + ... + 10764994.

It is an arithmetic number, because the mean of its divisors is an integer number (51010153920).

Almost surely, 2^655553441665 is an apocalyptic number.

It is an amenable number.

655553441665 is a deficient number, since it is larger than the sum of its proper divisors (160609021055).

655553441665 is a wasteful number, since it uses less digits than its factorization.

655553441665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21469152.

The product of its digits is 32400000, while the sum is 55.

The spelling of 655553441665 in words is "six hundred fifty-five billion, five hundred fifty-three million, four hundred forty-one thousand, six hundred sixty-five".