2665127813 has 2 divisors, whose sum is σ = 2665127814. Its totient is φ = 2665127812.

The previous prime is 2665127807. The next prime is 2665127833. The reversal of 2665127813 is 3187215662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2359822084 + 305305729 = 48578^2 + 17473^2 .

It is a cyclic number.

It is not a de Polignac number, because 2665127813 - 2⁶ = 2665127749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2665127833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332563906 + 1332563907.

It is an arithmetic number, because the mean of its divisors is an integer number (1332563907).

Almost surely, 2^2665127813 is an apocalyptic number.

It is an amenable number.

2665127813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2665127813 is an equidigital number, since it uses as much as digits as its factorization.

2665127813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 2665127813 is about 51624.8759126838. The cubic root of 2665127813 is about 1386.4557519897.

The spelling of 2665127813 in words is "two billion, six hundred sixty-five million, one hundred twenty-seven thousand, eight hundred thirteen".