204552553100 has 108 divisors (see below), whose sum is σ = 519335916624. Its totient is φ = 69726625920.

The previous prime is 204552553087. The next prime is 204552553109. The reversal of 204552553100 is 1355255402.

It is a super-2 number, since 2×204552553100² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204552553109) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 727049 + ... + 968351.

Almost surely, 2^204552553100 is an apocalyptic number.

204552553100 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 204552553100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259667958312).

204552553100 is an abundant number, since it is smaller than the sum of its proper divisors (314783363524).

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

204552553100 is a wasteful number, since it uses less digits than its factorization.

204552553100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241504 (or 241490 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 32.

The spelling of 204552553100 in words is "two hundred four billion, five hundred fifty-two million, five hundred fifty-three thousand, one hundred".