214020687817 has 2 divisors, whose sum is σ = 214020687818. Its totient is φ = 214020687816.

The previous prime is 214020687767. The next prime is 214020687821. The reversal of 214020687817 is 718786020412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196688702016 + 17331985801 = 443496^2 + 131651^2 .

It is a cyclic number.

It is not a de Polignac number, because 214020687817 - 2³⁵ = 179660949449 is a prime.

It is not a weakly prime, because it can be changed into another prime (214020687827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107010343908 + 107010343909.

It is an arithmetic number, because the mean of its divisors is an integer number (107010343909).

Almost surely, 2^214020687817 is an apocalyptic number.

It is an amenable number.

214020687817 is a deficient number, since it is larger than the sum of its proper divisors (1).

214020687817 is an equidigital number, since it uses as much as digits as its factorization.

214020687817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 301056, while the sum is 46.

The spelling of 214020687817 in words is "two hundred fourteen billion, twenty million, six hundred eighty-seven thousand, eight hundred seventeen".