20703353416066 has 16 divisors (see below), whose sum is σ = 31488217263000. Its totient is φ = 10207351047168.

The previous prime is 20703353416027. The next prime is 20703353416079. The reversal of 20703353416066 is 66061435330702.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15760383904225 + 4942969511841 = 3969935^2 + 2223279^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16919811 + ... + 18102118.

Almost surely, 2^{20703353416066} is an apocalyptic number.

20703353416066 is a deficient number, since it is larger than the sum of its proper divisors (10784863846934).

20703353416066 is a wasteful number, since it uses less digits than its factorization.

20703353416066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35026053.

The product of its (nonzero) digits is 1632960, while the sum is 46.

Adding to 20703353416066 its reverse (66061435330702), we get a palindrome (86764788746768).

The spelling of 20703353416066 in words is "twenty trillion, seven hundred three billion, three hundred fifty-three million, four hundred sixteen thousand, sixty-six".