50555000065 has 4 divisors (see below), whose sum is σ = 60666000084. Its totient is φ = 40444000048.

The previous prime is 50555000059. The next prime is 50555000071. The reversal of 50555000065 is 56000055505.

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

It is an interprime number because it is at equal distance from previous prime (50555000059) and next prime (50555000071).

It can be written as a sum of positive squares in 2 ways, for example, as 5914071409 + 44640928656 = 76903^2 + 211284^2 .

It is a cyclic number.

It is not a de Polignac number, because 50555000065 - 2⁵ = 50555000033 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5055500002 + ... + 5055500011.

It is an arithmetic number, because the mean of its divisors is an integer number (15166500021).

Almost surely, 2^50555000065 is an apocalyptic number.

It is an amenable number.

50555000065 is a deficient number, since it is larger than the sum of its proper divisors (10111000019).

50555000065 is a wasteful number, since it uses less digits than its factorization.

50555000065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10111000018.

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

The spelling of 50555000065 in words is "fifty billion, five hundred fifty-five million, sixty-five", and thus it is an aban number.