1663223665097 has 2 divisors, whose sum is σ = 1663223665098. Its totient is φ = 1663223665096.

The previous prime is 1663223665067. The next prime is 1663223665127. The reversal of 1663223665097 is 7905663223661.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1663223665067) and next prime (1663223665127).

It can be written as a sum of positive squares in only one way, i.e., 1211839898896 + 451383766201 = 1100836^2 + 671851^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1663223665097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1663223665067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831611832548 + 831611832549.

It is an arithmetic number, because the mean of its divisors is an integer number (831611832549).

Almost surely, 2^{1663223665097} is an apocalyptic number.

It is an amenable number.

1663223665097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1663223665097 is an equidigital number, since it uses as much as digits as its factorization.

1663223665097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14696640, while the sum is 56.

The spelling of 1663223665097 in words is "one trillion, six hundred sixty-three billion, two hundred twenty-three million, six hundred sixty-five thousand, ninety-seven".