209759616047 has 2 divisors, whose sum is σ = 209759616048. Its totient is φ = 209759616046.

The previous prime is 209759615999. The next prime is 209759616049. The reversal of 209759616047 is 740616957902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 209759616047 - 2¹⁴ = 209759599663 is a prime.

Together with 209759616049, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 209759615983 and 209759616001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (209759616049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104879808023 + 104879808024.

It is an arithmetic number, because the mean of its divisors is an integer number (104879808024).

Almost surely, 2^209759616047 is an apocalyptic number.

209759616047 is a deficient number, since it is larger than the sum of its proper divisors (1).

209759616047 is an equidigital number, since it uses as much as digits as its factorization.

209759616047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5715360, while the sum is 56.

The spelling of 209759616047 in words is "two hundred nine billion, seven hundred fifty-nine million, six hundred sixteen thousand, forty-seven".