209130372903671 has 2 divisors, whose sum is σ = 209130372903672. Its totient is φ = 209130372903670.

The previous prime is 209130372903631. The next prime is 209130372903743. The reversal of 209130372903671 is 176309273031902.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-209130372903671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (209130372903631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104565186451835 + 104565186451836.

It is an arithmetic number, because the mean of its divisors is an integer number (104565186451836).

Almost surely, 2^{209130372903671} is an apocalyptic number.

209130372903671 is a deficient number, since it is larger than the sum of its proper divisors (1).

209130372903671 is an equidigital number, since it uses as much as digits as its factorization.

209130372903671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2571912, while the sum is 53.

The spelling of 209130372903671 in words is "two hundred nine trillion, one hundred thirty billion, three hundred seventy-two million, nine hundred three thousand, six hundred seventy-one".