20704089138896 has 40 divisors (see below), whose sum is σ = 40284446433984. Its totient is φ = 10308131348480.

The previous prime is 20704089138869. The next prime is 20704089138907. The reversal of 20704089138896 is 69883198040702.

It is a happy number.

It is a congruent number.

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, 10804901 + ... + 12575931.

Almost surely, 2^{20704089138896} is an apocalyptic number.

It is an amenable number.

20704089138896 is a deficient number, since it is larger than the sum of its proper divisors (19580357295088).

20704089138896 is a wasteful number, since it uses less digits than its factorization.

20704089138896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774139 (or 1774133 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 65.

The spelling of 20704089138896 in words is "twenty trillion, seven hundred four billion, eighty-nine million, one hundred thirty-eight thousand, eight hundred ninety-six".