12065565545 has 32 divisors (see below), whose sum is σ = 15985655424. Its totient is φ = 8669376000.

The previous prime is 12065565527. The next prime is 12065565571. The reversal of 12065565545 is 54556556021.

It is not a de Polignac number, because 12065565545 - 2¹² = 12065561449 is a prime.

It is a super-2 number, since 2×12065565545² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12065565496 and 12065565505.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2903189 + ... + 2907341.

It is an arithmetic number, because the mean of its divisors is an integer number (499551732).

Almost surely, 2^12065565545 is an apocalyptic number.

It is an amenable number.

12065565545 is a deficient number, since it is larger than the sum of its proper divisors (3920089879).

12065565545 is a wasteful number, since it uses less digits than its factorization.

12065565545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4793.

The product of its (nonzero) digits is 900000, while the sum is 44.

The spelling of 12065565545 in words is "twelve billion, sixty-five million, five hundred sixty-five thousand, five hundred forty-five".