20663030566 has 8 divisors (see below), whose sum is σ = 31502653344. Its totient is φ = 10162146120.

The previous prime is 20663030551. The next prime is 20663030567. The reversal of 20663030566 is 66503036602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20663030567) 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 3 ways as a sum of consecutive naturals, for example, 84684430 + ... + 84684673.

It is an arithmetic number, because the mean of its divisors is an integer number (3937831668).

Almost surely, 2^20663030566 is an apocalyptic number.

20663030566 is a deficient number, since it is larger than the sum of its proper divisors (10839622778).

20663030566 is a wasteful number, since it uses less digits than its factorization.

20663030566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169369166.

The product of its (nonzero) digits is 116640, while the sum is 37.

The spelling of 20663030566 in words is "twenty billion, six hundred sixty-three million, thirty thousand, five hundred sixty-six".