65505055567205 has 4 divisors (see below), whose sum is σ = 78606066680652. Its totient is φ = 52404044453760.

The previous prime is 65505055567183. The next prime is 65505055567219. The reversal of 65505055567205 is 50276555050556.

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 8105915773921 + 57399139793284 = 2847089^2 + 7576222^2 .

It is not a de Polignac number, because 65505055567205 - 2¹² = 65505055563109 is a prime.

It is a super-2 number, since 2×65505055567205² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6550505556716 + ... + 6550505556725.

It is an arithmetic number, because the mean of its divisors is an integer number (19651516670163).

Almost surely, 2^{65505055567205} is an apocalyptic number.

It is an amenable number.

65505055567205 is a deficient number, since it is larger than the sum of its proper divisors (13101011113447).

65505055567205 is a wasteful number, since it uses less digits than its factorization.

65505055567205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13101011113446.

The product of its (nonzero) digits is 39375000, while the sum is 56.

The spelling of 65505055567205 in words is "sixty-five trillion, five hundred five billion, fifty-five million, five hundred sixty-seven thousand, two hundred five".