20704089138904 has 32 divisors (see below), whose sum is σ = 40546988352000. Its totient is φ = 9892425308832.

The previous prime is 20704089138869. The next prime is 20704089138907. The reversal of 20704089138904 is 40983198040702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20704089138907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53958114 + ... + 54340465.

It is an arithmetic number, because the mean of its divisors is an integer number (1267093386000).

Almost surely, 2^{20704089138904} is an apocalyptic number.

It is an amenable number.

20704089138904 is a deficient number, since it is larger than the sum of its proper divisors (19842899213096).

20704089138904 is a wasteful number, since it uses less digits than its factorization.

20704089138904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108299647 (or 108299643 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 55.

The spelling of 20704089138904 in words is "twenty trillion, seven hundred four billion, eighty-nine million, one hundred thirty-eight thousand, nine hundred four".