20704089138903 has 6 divisors (see below), whose sum is σ = 29905906533984. Its totient is φ = 13802726092596.

The previous prime is 20704089138869. The next prime is 20704089138907. The reversal of 20704089138903 is 30983198040702.

20704089138903 is a `hidden beast` number, since 2 + 0 + 70 + 408 + 91 + 3 + 89 + 0 + 3 = 666.

It is not a de Polignac number, because 20704089138903 - 2¹⁸ = 20704088876759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20704089138903.

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 5 ways as a sum of consecutive naturals, for example, 1150227174375 + ... + 1150227174392.

It is an arithmetic number, because the mean of its divisors is an integer number (4984317755664).

Almost surely, 2^{20704089138903} is an apocalyptic number.

20704089138903 is a deficient number, since it is larger than the sum of its proper divisors (9201817395081).

20704089138903 is a wasteful number, since it uses less digits than its factorization.

20704089138903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2300454348773 (or 2300454348770 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 20704089138903 in words is "twenty trillion, seven hundred four billion, eighty-nine million, one hundred thirty-eight thousand, nine hundred three".