20000123203000 has 128 divisors (see below), whose sum is σ = 47949805612800. Its totient is φ = 7803616128000.

The previous prime is 20000123202929. The next prime is 20000123203009. The reversal of 20000123203000 is 30232100002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000123203009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 265191297 + ... + 265266703.

It is an arithmetic number, because the mean of its divisors is an integer number (374607856350).

Almost surely, 2^{20000123203000} is an apocalyptic number.

20000123203000 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 20000123203000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23974902806400).

20000123203000 is an abundant number, since it is smaller than the sum of its proper divisors (27949682409800).

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

20000123203000 is a wasteful number, since it uses less digits than its factorization.

20000123203000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81938 (or 81924 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20000123203000 its reverse (30232100002), we get a palindrome (20030355303002).

The spelling of 20000123203000 in words is "twenty trillion, one hundred twenty-three million, two hundred three thousand".