217203337139 has 2 divisors, whose sum is σ = 217203337140. Its totient is φ = 217203337138.

The previous prime is 217203337133. The next prime is 217203337237. The reversal of 217203337139 is 931733302712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 217203337139 - 2⁴ = 217203337123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 217203337096 and 217203337105.

It is not a weakly prime, because it can be changed into another prime (217203337133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108601668569 + 108601668570.

It is an arithmetic number, because the mean of its divisors is an integer number (108601668570).

Almost surely, 2^217203337139 is an apocalyptic number.

217203337139 is a deficient number, since it is larger than the sum of its proper divisors (1).

217203337139 is an equidigital number, since it uses as much as digits as its factorization.

217203337139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 142884, while the sum is 41.

The spelling of 217203337139 in words is "two hundred seventeen billion, two hundred three million, three hundred thirty-seven thousand, one hundred thirty-nine".