2516640517 has 2 divisors, whose sum is σ = 2516640518. Its totient is φ = 2516640516.

The previous prime is 2516640491. The next prime is 2516640523. The reversal of 2516640517 is 7150466152.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1445976676 + 1070663841 = 38026^2 + 32721^2 .

It is a cyclic number.

It is not a de Polignac number, because 2516640517 - 2⁷ = 2516640389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2516640587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1258320258 + 1258320259.

It is an arithmetic number, because the mean of its divisors is an integer number (1258320259).

Almost surely, 2^2516640517 is an apocalyptic number.

It is an amenable number.

2516640517 is a deficient number, since it is larger than the sum of its proper divisors (1).

2516640517 is an equidigital number, since it uses as much as digits as its factorization.

2516640517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 2516640517 is about 50166.1291809524. The cubic root of 2516640517 is about 1360.2134391437.

The spelling of 2516640517 in words is "two billion, five hundred sixteen million, six hundred forty thousand, five hundred seventeen".