204006664644 has 48 divisors (see below), whose sum is σ = 501449625600. Its totient is φ = 64374219936.

The previous prime is 204006664621. The next prime is 204006664649. The reversal of 204006664644 is 446466600402.

It is a junction number, because it is equal to n+sod(n) for n = 204006664596 and 204006664605.

It is not an unprimeable number, because it can be changed into a prime (204006664649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38452 + ... + 639915.

It is an arithmetic number, because the mean of its divisors is an integer number (10446867200).

Almost surely, 2^204006664644 is an apocalyptic number.

It is an amenable number.

204006664644 is an abundant number, since it is smaller than the sum of its proper divisors (297442960956).

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

204006664644 is a wasteful number, since it uses less digits than its factorization.

204006664644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679712 (or 679710 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 204006664644 in words is "two hundred four billion, six million, six hundred sixty-four thousand, six hundred forty-four".