20717066662 has 8 divisors (see below), whose sum is σ = 31078027800. Its totient is φ = 10357724064.

The previous prime is 20717066653. The next prime is 20717066683. The reversal of 20717066662 is 26666071702.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372112 + ... + 424147.

It is an arithmetic number, because the mean of its divisors is an integer number (3884753475).

Almost surely, 2^20717066662 is an apocalyptic number.

20717066662 is a deficient number, since it is larger than the sum of its proper divisors (10360961138).

20717066662 is a wasteful number, since it uses less digits than its factorization.

20717066662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809270.

The product of its (nonzero) digits is 254016, while the sum is 43.

The spelling of 20717066662 in words is "twenty billion, seven hundred seventeen million, sixty-six thousand, six hundred sixty-two".