204155613112 has 96 divisors (see below), whose sum is σ = 437943517200. Its totient is φ = 89046397440.

The previous prime is 204155613107. The next prime is 204155613119. The reversal of 204155613112 is 211316551402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204155613119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4553428 + ... + 4598044.

Almost surely, 2^204155613112 is an apocalyptic number.

204155613112 is a gapful number since it is divisible by the number (22) 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 204155613112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218971758600).

204155613112 is an abundant number, since it is smaller than the sum of its proper divisors (233787904088).

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

204155613112 is a wasteful number, since it uses less digits than its factorization.

204155613112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44837 (or 44822 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 204155613112 in words is "two hundred four billion, one hundred fifty-five million, six hundred thirteen thousand, one hundred twelve".