2580078517 has 2 divisors, whose sum is σ = 2580078518. Its totient is φ = 2580078516.

The previous prime is 2580078451. The next prime is 2580078587. The reversal of 2580078517 is 7158700852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2579725681 + 352836 = 50791^2 + 594^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2580078517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2580078587) 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, 1290039258 + 1290039259.

It is an arithmetic number, because the mean of its divisors is an integer number (1290039259).

Almost surely, 2^2580078517 is an apocalyptic number.

It is an amenable number.

2580078517 is a deficient number, since it is larger than the sum of its proper divisors (1).

2580078517 is an equidigital number, since it uses as much as digits as its factorization.

2580078517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 156800, while the sum is 43.

The square root of 2580078517 is about 50794.4732918848. The cubic root of 2580078517 is about 1371.5478832060.

The spelling of 2580078517 in words is "two billion, five hundred eighty million, seventy-eight thousand, five hundred seventeen".