1663500242269 has 2 divisors, whose sum is σ = 1663500242270. Its totient is φ = 1663500242268.

The previous prime is 1663500242207. The next prime is 1663500242273. The reversal of 1663500242269 is 9622420053661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 916940304900 + 746559937369 = 957570^2 + 864037^2 .

It is a cyclic number.

It is not a de Polignac number, because 1663500242269 - 2¹⁹ = 1663499717981 is a prime.

It is a super-2 number, since 2×1663500242269² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1663500242279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831750121134 + 831750121135.

It is an arithmetic number, because the mean of its divisors is an integer number (831750121135).

Almost surely, 2^{1663500242269} is an apocalyptic number.

It is an amenable number.

1663500242269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1663500242269 is an equidigital number, since it uses as much as digits as its factorization.

1663500242269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 1663500242269 in words is "one trillion, six hundred sixty-three billion, five hundred million, two hundred forty-two thousand, two hundred sixty-nine".