204452051520 has 112 divisors (see below), whose sum is σ = 650805180480. Its totient is φ = 54380292096.

The previous prime is 204452051411. The next prime is 204452051527. The reversal of 204452051520 is 25150254402.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (204452051527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99699 + ... + 647181.

It is an arithmetic number, because the mean of its divisors is an integer number (5810760540).

Almost surely, 2^204452051520 is an apocalyptic number.

204452051520 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 204452051520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325402590240).

204452051520 is an abundant number, since it is smaller than the sum of its proper divisors (446353128960).

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

204452051520 is a wasteful number, since it uses less digits than its factorization.

204452051520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547892 (or 547882 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The spelling of 204452051520 in words is "two hundred four billion, four hundred fifty-two million, fifty-one thousand, five hundred twenty".