204213223240 has 64 divisors (see below), whose sum is σ = 500786193600. Its totient is φ = 74493334272.

The previous prime is 204213223237. The next prime is 204213223297. The reversal of 204213223240 is 42322312402.

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, 2322610 + ... + 2408929.

It is an arithmetic number, because the mean of its divisors is an integer number (7824784275).

Almost surely, 2^204213223240 is an apocalyptic number.

204213223240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204213223240 is an abundant number, since it is smaller than the sum of its proper divisors (296572970360).

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

204213223240 is a wasteful number, since it uses less digits than its factorization.

204213223240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4731646 (or 4731642 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 204213223240 its reverse (42322312402), we get a palindrome (246535535642).

The spelling of 204213223240 in words is "two hundred four billion, two hundred thirteen million, two hundred twenty-three thousand, two hundred forty".