655500000005 has 4 divisors (see below), whose sum is σ = 786600000012. Its totient is φ = 524400000000.

The previous prime is 655499999933. The next prime is 655500000007. The reversal of 655500000005 is 500000005556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 522970509889 + 132529490116 = 723167^2 + 364046^2 .

It is not a de Polignac number, because 655500000005 - 2¹⁰ = 655499998981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 655500000005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655500000007) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 65549999996 + ... + 65550000005.

It is an arithmetic number, because the mean of its divisors is an integer number (196650000003).

Almost surely, 2^655500000005 is an apocalyptic number.

It is an amenable number.

655500000005 is a deficient number, since it is larger than the sum of its proper divisors (131100000007).

655500000005 is a wasteful number, since it uses less digits than its factorization.

655500000005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131100000006.

The product of its (nonzero) digits is 3750, while the sum is 26.

The spelling of 655500000005 in words is "six hundred fifty-five billion, five hundred million, five", and thus it is an aban number.