655660055565 has 48 divisors (see below), whose sum is σ = 1140264216000. Its totient is φ = 348521792256.

The previous prime is 655660055513. The next prime is 655660055569. The reversal of 655660055565 is 565550066556.

It is not a de Polignac number, because 655660055565 - 2¹⁰ = 655660054541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655660055569) by changing a digit.

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, 20668086 + ... + 20699784.

It is an arithmetic number, because the mean of its divisors is an integer number (23755504500).

Almost surely, 2^655660055565 is an apocalyptic number.

It is an amenable number.

655660055565 is a deficient number, since it is larger than the sum of its proper divisors (484604160435).

655660055565 is a wasteful number, since it uses less digits than its factorization.

655660055565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33226 (or 33223 counting only the distinct ones).

The product of its (nonzero) digits is 20250000, while the sum is 54.

The spelling of 655660055565 in words is "six hundred fifty-five billion, six hundred sixty million, fifty-five thousand, five hundred sixty-five".