55005500065 has 4 divisors (see below), whose sum is σ = 66006600084. Its totient is φ = 44004400048.

The previous prime is 55005500051. The next prime is 55005500089. The reversal of 55005500065 is 56000550055.

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 11186869824 + 43818630241 = 105768^2 + 209329^2 .

It is a cyclic number.

It is not a de Polignac number, because 55005500065 - 2²⁷ = 54871282337 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 5500550002 + ... + 5500550011.

It is an arithmetic number, because the mean of its divisors is an integer number (16501650021).

Almost surely, 2^55005500065 is an apocalyptic number.

It is an amenable number.

55005500065 is a deficient number, since it is larger than the sum of its proper divisors (11001100019).

55005500065 is a wasteful number, since it uses less digits than its factorization.

55005500065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11001100018.

The product of its (nonzero) digits is 18750, while the sum is 31.

The spelling of 55005500065 in words is "fifty-five billion, five million, five hundred thousand, sixty-five".