204011020142320 has 80 divisors (see below), whose sum is σ = 478068231674880. Its totient is φ = 80961329740032.

The previous prime is 204011020142291. The next prime is 204011020142357. The reversal of 204011020142320 is 23241020110402.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 204011020142291 and 204011020142300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9751209 + ... + 22430071.

It is an arithmetic number, because the mean of its divisors is an integer number (5975852895936).

Almost surely, 2^{204011020142320} is an apocalyptic number.

204011020142320 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 204011020142320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239034115837440).

204011020142320 is an abundant number, since it is smaller than the sum of its proper divisors (274057211532560).

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

204011020142320 is a wasteful number, since it uses less digits than its factorization.

204011020142320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12680462 (or 12680456 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 204011020142320 its reverse (23241020110402), we get a palindrome (227252040252722).

The spelling of 204011020142320 in words is "two hundred four trillion, eleven billion, twenty million, one hundred forty-two thousand, three hundred twenty".