2518664513 has 2 divisors, whose sum is σ = 2518664514. Its totient is φ = 2518664512.

The previous prime is 2518664509. The next prime is 2518664521. The reversal of 2518664513 is 3154668152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1498309264 + 1020355249 = 38708^2 + 31943^2 .

It is a cyclic number.

It is not a de Polignac number, because 2518664513 - 2² = 2518664509 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2518664543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1259332256 + 1259332257.

It is an arithmetic number, because the mean of its divisors is an integer number (1259332257).

Almost surely, 2^2518664513 is an apocalyptic number.

It is an amenable number.

2518664513 is a deficient number, since it is larger than the sum of its proper divisors (1).

2518664513 is an equidigital number, since it uses as much as digits as its factorization.

2518664513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 41.

The square root of 2518664513 is about 50186.2980603272. The cubic root of 2518664513 is about 1360.5779897982.

The spelling of 2518664513 in words is "two billion, five hundred eighteen million, six hundred sixty-four thousand, five hundred thirteen".