204542503140 has 48 divisors (see below), whose sum is σ = 586687772160. Its totient is φ = 53214309120.

The previous prime is 204542503037. The next prime is 204542503159. The reversal of 204542503140 is 41305245402.

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

It is a junction number, because it is equal to n+sod(n) for n = 204542503098 and 204542503107.

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, 41571220 + ... + 41576139.

It is an arithmetic number, because the mean of its divisors is an integer number (12222661920).

Almost surely, 2^204542503140 is an apocalyptic number.

204542503140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204542503140 is an abundant number, since it is smaller than the sum of its proper divisors (382145269020).

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

204542503140 is a wasteful number, since it uses less digits than its factorization.

204542503140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83147412 (or 83147410 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 204542503140 its reverse (41305245402), we get a palindrome (245847748542).

The spelling of 204542503140 in words is "two hundred four billion, five hundred forty-two million, five hundred three thousand, one hundred forty".