204007785020 has 48 divisors (see below), whose sum is σ = 463209733728. Its totient is φ = 75025824000.

The previous prime is 204007785019. The next prime is 204007785029. The reversal of 204007785020 is 20587700402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204007785029) 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, 1497779 + ... + 1628298.

It is an arithmetic number, because the mean of its divisors is an integer number (9650202786).

Almost surely, 2^204007785020 is an apocalyptic number.

204007785020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204007785020 is an abundant number, since it is smaller than the sum of its proper divisors (259201948708).

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

204007785020 is a wasteful number, since it uses less digits than its factorization.

204007785020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3126350 (or 3126348 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 35.

The spelling of 204007785020 in words is "two hundred four billion, seven million, seven hundred eighty-five thousand, twenty".