217930382699 has 2 divisors, whose sum is σ = 217930382700. Its totient is φ = 217930382698.

The previous prime is 217930382671. The next prime is 217930382729. The reversal of 217930382699 is 996283039712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 217930382699 - 2²⁰ = 217929334123 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (217930382629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108965191349 + 108965191350.

It is an arithmetic number, because the mean of its divisors is an integer number (108965191350).

Almost surely, 2^217930382699 is an apocalyptic number.

217930382699 is a deficient number, since it is larger than the sum of its proper divisors (1).

217930382699 is an equidigital number, since it uses as much as digits as its factorization.

217930382699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8817984, while the sum is 59.

The spelling of 217930382699 in words is "two hundred seventeen billion, nine hundred thirty million, three hundred eighty-two thousand, six hundred ninety-nine".