204017207120 has 40 divisors (see below), whose sum is σ = 480054962016. Its totient is φ = 80623664768.

The previous prime is 204017207089. The next prime is 204017207129. The reversal of 204017207120 is 21702710402.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 204017207120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204017207129) 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, 15356102 + ... + 15369381.

Almost surely, 2^204017207120 is an apocalyptic number.

204017207120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204017207120 is an abundant number, since it is smaller than the sum of its proper divisors (276037754896).

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

204017207120 is a wasteful number, since it uses less digits than its factorization.

204017207120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30725579 (or 30725573 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

Adding to 204017207120 its reverse (21702710402), we get a palindrome (225719917522).

The spelling of 204017207120 in words is "two hundred four billion, seventeen million, two hundred seven thousand, one hundred twenty".