518901606401 has 2 divisors, whose sum is σ = 518901606402. Its totient is φ = 518901606400.

The previous prime is 518901606341. The next prime is 518901606403. The reversal of 518901606401 is 104606109815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 416219812801 + 102681793600 = 645151^2 + 320440^2 .

It is a cyclic number.

It is not a de Polignac number, because 518901606401 - 2³⁴ = 501721737217 is a prime.

Together with 518901606403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (518901606403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259450803200 + 259450803201.

It is an arithmetic number, because the mean of its divisors is an integer number (259450803201).

Almost surely, 2^518901606401 is an apocalyptic number.

It is an amenable number.

518901606401 is a deficient number, since it is larger than the sum of its proper divisors (1).

518901606401 is an equidigital number, since it uses as much as digits as its factorization.

518901606401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 41.

The spelling of 518901606401 in words is "five hundred eighteen billion, nine hundred one million, six hundred six thousand, four hundred one".