1663705283417 has 2 divisors, whose sum is σ = 1663705283418. Its totient is φ = 1663705283416.

The previous prime is 1663705283389. The next prime is 1663705283467. The reversal of 1663705283417 is 7143825073661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1194002031616 + 469703251801 = 1092704^2 + 685349^2 .

It is a cyclic number.

It is not a de Polignac number, because 1663705283417 - 2¹⁸ = 1663705021273 is a prime.

It is not a weakly prime, because it can be changed into another prime (1663705283467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831852641708 + 831852641709.

It is an arithmetic number, because the mean of its divisors is an integer number (831852641709).

Almost surely, 2^{1663705283417} is an apocalyptic number.

It is an amenable number.

1663705283417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1663705283417 is an equidigital number, since it uses as much as digits as its factorization.

1663705283417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 1663705283417 in words is "one trillion, six hundred sixty-three billion, seven hundred five million, two hundred eighty-three thousand, four hundred seventeen".