518067954917 has 2 divisors, whose sum is σ = 518067954918. Its totient is φ = 518067954916.

The previous prime is 518067954883. The next prime is 518067954923. The reversal of 518067954917 is 719459760815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 419656500481 + 98411454436 = 647809^2 + 313706^2 .

It is a cyclic number.

It is not a de Polignac number, because 518067954917 - 2⁸ = 518067954661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 518067954917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (518067954947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259033977458 + 259033977459.

It is an arithmetic number, because the mean of its divisors is an integer number (259033977459).

Almost surely, 2^518067954917 is an apocalyptic number.

It is an amenable number.

518067954917 is a deficient number, since it is larger than the sum of its proper divisors (1).

518067954917 is an equidigital number, since it uses as much as digits as its factorization.

518067954917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19051200, while the sum is 62.

The spelling of 518067954917 in words is "five hundred eighteen billion, sixty-seven million, nine hundred fifty-four thousand, nine hundred seventeen".