2660505413 has 2 divisors, whose sum is σ = 2660505414. Its totient is φ = 2660505412.

The previous prime is 2660505403. The next prime is 2660505433. The reversal of 2660505413 is 3145050662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2649469729 + 11035684 = 51473^2 + 3322^2 .

It is a cyclic number.

It is not a de Polignac number, because 2660505413 - 2²⁶ = 2593396549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2660505413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2660505403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330252706 + 1330252707.

It is an arithmetic number, because the mean of its divisors is an integer number (1330252707).

Almost surely, 2^2660505413 is an apocalyptic number.

It is an amenable number.

2660505413 is a deficient number, since it is larger than the sum of its proper divisors (1).

2660505413 is an equidigital number, since it uses as much as digits as its factorization.

2660505413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 2660505413 is about 51580.0873690613. The cubic root of 2660505413 is about 1385.6537314479.

The spelling of 2660505413 in words is "two billion, six hundred sixty million, five hundred five thousand, four hundred thirteen".