204016227640 has 32 divisors (see below), whose sum is σ = 459244702080. Its totient is φ = 81569479552.

The previous prime is 204016227521. The next prime is 204016227659. The reversal of 204016227640 is 46722610402.

It is a super-2 number, since 2×204016227640² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204016227596 and 204016227605.

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, 1067227 + ... + 1243786.

It is an arithmetic number, because the mean of its divisors is an integer number (14351396940).

Almost surely, 2^204016227640 is an apocalyptic number.

204016227640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204016227640 is an abundant number, since it is smaller than the sum of its proper divisors (255228474440).

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

204016227640 is a wasteful number, since it uses less digits than its factorization.

204016227640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2313231 (or 2313227 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The spelling of 204016227640 in words is "two hundred four billion, sixteen million, two hundred twenty-seven thousand, six hundred forty".