204450042620 has 48 divisors (see below), whose sum is σ = 432194585760. Its totient is φ = 81237758976.

The previous prime is 204450042619. The next prime is 204450042689. The reversal of 204450042620 is 26240054402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7004216 + ... + 7033344.

It is an arithmetic number, because the mean of its divisors is an integer number (9004053870).

Almost surely, 2^204450042620 is an apocalyptic number.

204450042620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204450042620 is an abundant number, since it is smaller than the sum of its proper divisors (227744543140).

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

204450042620 is a wasteful number, since it uses less digits than its factorization.

204450042620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31454 (or 31452 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

The spelling of 204450042620 in words is "two hundred four billion, four hundred fifty million, forty-two thousand, six hundred twenty".