1663500242266 has 16 divisors (see below), whose sum is σ = 2528620786944. Its totient is φ = 820692661824.

The previous prime is 1663500242207. The next prime is 1663500242269. The reversal of 1663500242266 is 6622420053661.

It is not an unprimeable number, because it can be changed into a prime (1663500242269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16453236 + ... + 16554031.

It is an arithmetic number, because the mean of its divisors is an integer number (158038799184).

Almost surely, 2^{1663500242266} is an apocalyptic number.

1663500242266 is a deficient number, since it is larger than the sum of its proper divisors (865120544678).

1663500242266 is a wasteful number, since it uses less digits than its factorization.

1663500242266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33007605.

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 1663500242266 in words is "one trillion, six hundred sixty-three billion, five hundred million, two hundred forty-two thousand, two hundred sixty-six".