17719660487 has 2 divisors, whose sum is σ = 17719660488. Its totient is φ = 17719660486.

The previous prime is 17719660447. The next prime is 17719660489. The reversal of 17719660487 is 78406691771.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 17719660487 - 2¹⁶ = 17719594951 is a prime.

Together with 17719660489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17719660489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8859830243 + 8859830244.

It is an arithmetic number, because the mean of its divisors is an integer number (8859830244).

Almost surely, 2^17719660487 is an apocalyptic number.

17719660487 is a deficient number, since it is larger than the sum of its proper divisors (1).

17719660487 is an equidigital number, since it uses as much as digits as its factorization.

17719660487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3556224, while the sum is 56.

The spelling of 17719660487 in words is "seventeen billion, seven hundred nineteen million, six hundred sixty thousand, four hundred eighty-seven".