204121345524 has 24 divisors (see below), whose sum is σ = 504299795328. Its totient is φ = 64038069120.

The previous prime is 204121345517. The next prime is 204121345601. The reversal of 204121345524 is 425543121402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500297212 + ... + 500297619.

It is an arithmetic number, because the mean of its divisors is an integer number (21012491472).

Almost surely, 2^204121345524 is an apocalyptic number.

It is an amenable number.

204121345524 is an abundant number, since it is smaller than the sum of its proper divisors (300178449804).

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

204121345524 is a wasteful number, since it uses less digits than its factorization.

204121345524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000594855 (or 1000594853 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 204121345524 its reverse (425543121402), we get a palindrome (629664466926).

The spelling of 204121345524 in words is "two hundred four billion, one hundred twenty-one million, three hundred forty-five thousand, five hundred twenty-four".