12695565541 has 16 divisors (see below), whose sum is σ = 13914464256. Its totient is φ = 11534213376.

The previous prime is 12695565529. The next prime is 12695565577. The reversal of 12695565541 is 14556559621.

It is a cyclic number.

It is not a de Polignac number, because 12695565541 - 2¹¹ = 12695563493 is a prime.

It is a super-2 number, since 2×12695565541² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12695569541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420 + ... + 159346.

It is an arithmetic number, because the mean of its divisors is an integer number (869654016).

Almost surely, 2^12695565541 is an apocalyptic number.

It is an amenable number.

12695565541 is a deficient number, since it is larger than the sum of its proper divisors (1218898715).

12695565541 is a wasteful number, since it uses less digits than its factorization.

12695565541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159108.

The product of its digits is 1620000, while the sum is 49.

The spelling of 12695565541 in words is "twelve billion, six hundred ninety-five million, five hundred sixty-five thousand, five hundred forty-one".