204451040124540 has 144 divisors (see below), whose sum is σ = 677699632471680. Its totient is φ = 49479452307840.

The previous prime is 204451040124481. The next prime is 204451040124607. The reversal of 204451040124540 is 45421040154402.

204451040124540 is a `hidden beast` number, since 2 + 0 + 4 + 4 + 5 + 1 + 0 + 401 + 245 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 204451040124495 and 204451040124504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 86791830 + ... + 89116349.

It is an arithmetic number, because the mean of its divisors is an integer number (4706247447720).

Almost surely, 2^{204451040124540} is an apocalyptic number.

204451040124540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204451040124540 is an abundant number, since it is smaller than the sum of its proper divisors (473248592347140).

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

204451040124540 is a wasteful number, since it uses less digits than its factorization.

204451040124540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175908792 (or 175908787 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 36.

Adding to 204451040124540 its reverse (45421040154402), we get a palindrome (249872080278942).

The spelling of 204451040124540 in words is "two hundred four trillion, four hundred fifty-one billion, forty million, one hundred twenty-four thousand, five hundred forty".