12550066565 has 16 divisors (see below), whose sum is σ = 15132116736. Its totient is φ = 9992083200.

The previous prime is 12550066549. The next prime is 12550066583. The reversal of 12550066565 is 56566005521.

It is not a de Polignac number, because 12550066565 - 2⁴ = 12550066549 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 3206960 + ... + 3210870.

It is an arithmetic number, because the mean of its divisors is an integer number (945757296).

Almost surely, 2^12550066565 is an apocalyptic number.

It is an amenable number.

12550066565 is a deficient number, since it is larger than the sum of its proper divisors (2582050171).

12550066565 is a wasteful number, since it uses less digits than its factorization.

12550066565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6820.

The product of its (nonzero) digits is 270000, while the sum is 41.

The spelling of 12550066565 in words is "twelve billion, five hundred fifty million, sixty-six thousand, five hundred sixty-five".