20704089138900 has 144 divisors (see below), whose sum is σ = 61040932755264. Its totient is φ = 5416311813120.

The previous prime is 20704089138869. The next prime is 20704089138907. The reversal of 20704089138900 is 983198040702.

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 47 ways as a sum of consecutive naturals, for example, 151729104 + ... + 151865496.

It is an arithmetic number, because the mean of its divisors is an integer number (423895366356).

Almost surely, 2^{20704089138900} is an apocalyptic number.

20704089138900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20704089138900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30520466377632).

20704089138900 is an abundant number, since it is smaller than the sum of its proper divisors (40336843616364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20704089138900 is a wasteful number, since it uses less digits than its factorization.

20704089138900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146010 (or 146003 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 20704089138900 in words is "twenty trillion, seven hundred four billion, eighty-nine million, one hundred thirty-eight thousand, nine hundred".