204646646644 has 24 divisors (see below), whose sum is σ = 391320266400. Its totient is φ = 92870914080.

The previous prime is 204646646621. The next prime is 204646646653. The reversal of 204646646644 is 446646646402.

204646646644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 204646646591 and 204646646600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3729679 + ... + 3784150.

It is an arithmetic number, because the mean of its divisors is an integer number (16305011100).

Almost surely, 2^204646646644 is an apocalyptic number.

It is an amenable number.

204646646644 is a deficient number, since it is larger than the sum of its proper divisors (186673619756).

204646646644 is a wasteful number, since it uses less digits than its factorization.

204646646644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7514463 (or 7514461 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 52.

The spelling of 204646646644 in words is "two hundred four billion, six hundred forty-six million, six hundred forty-six thousand, six hundred forty-four".