10645555205 has 4 divisors (see below), whose sum is σ = 12774666252. Its totient is φ = 8516444160.

The previous prime is 10645555133. The next prime is 10645555211. The reversal of 10645555205 is 50255554601.

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 5989676449 + 4655878756 = 77393^2 + 68234^2 .

It is not a de Polignac number, because 10645555205 - 2²⁶ = 10578446341 is a prime.

It is a super-2 number, since 2×10645555205² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 1064555516 + ... + 1064555525.

It is an arithmetic number, because the mean of its divisors is an integer number (3193666563).

Almost surely, 2^10645555205 is an apocalyptic number.

It is an amenable number.

10645555205 is a deficient number, since it is larger than the sum of its proper divisors (2129111047).

10645555205 is an equidigital number, since it uses as much as digits as its factorization.

10645555205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2129111046.

The product of its (nonzero) digits is 150000, while the sum is 38.

The spelling of 10645555205 in words is "ten billion, six hundred forty-five million, five hundred fifty-five thousand, two hundred five".