211418016697 has 2 divisors, whose sum is σ = 211418016698. Its totient is φ = 211418016696.

The previous prime is 211418016683. The next prime is 211418016757. The reversal of 211418016697 is 796610814112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144628850601 + 66789166096 = 380301^2 + 258436^2 .

It is a cyclic number.

It is not a de Polignac number, because 211418016697 - 2³⁵ = 177058278329 is a prime.

It is not a weakly prime, because it can be changed into another prime (211418016097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105709008348 + 105709008349.

It is an arithmetic number, because the mean of its divisors is an integer number (105709008349).

Almost surely, 2^211418016697 is an apocalyptic number.

It is an amenable number.

211418016697 is a deficient number, since it is larger than the sum of its proper divisors (1).

211418016697 is an equidigital number, since it uses as much as digits as its factorization.

211418016697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 46.

The spelling of 211418016697 in words is "two hundred eleven billion, four hundred eighteen million, sixteen thousand, six hundred ninety-seven".