204542330540 has 48 divisors (see below), whose sum is σ = 434957476800. Its totient is φ = 80788672512.

The previous prime is 204542330501. The next prime is 204542330543. The reversal of 204542330540 is 45033245402.

It is a junction number, because it is equal to n+sod(n) for n = 204542330497 and 204542330506.

It is not an unprimeable number, because it can be changed into a prime (204542330543) 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, 731576 + ... + 971744.

It is an arithmetic number, because the mean of its divisors is an integer number (9061614100).

Almost surely, 2^204542330540 is an apocalyptic number.

204542330540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204542330540 is an abundant number, since it is smaller than the sum of its proper divisors (230415146260).

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

204542330540 is a wasteful number, since it uses less digits than its factorization.

204542330540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240714 (or 240712 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 32.

Adding to 204542330540 its reverse (45033245402), we get a palindrome (249575575942).

The spelling of 204542330540 in words is "two hundred four billion, five hundred forty-two million, three hundred thirty thousand, five hundred forty".