204521345156444 has 12 divisors (see below), whose sum is σ = 365527510492704. Its totient is φ = 100084913587104.

The previous prime is 204521345156417. The next prime is 204521345156449. The reversal of 204521345156444 is 444651543125402.

It is a junction number, because it is equal to n+sod(n) for n = 204521345156392 and 204521345156401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204521345156449) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 543939747569 + ... + 543939747944.

It is an arithmetic number, because the mean of its divisors is an integer number (30460625874392).

Almost surely, 2^{204521345156444} is an apocalyptic number.

It is an amenable number.

204521345156444 is a deficient number, since it is larger than the sum of its proper divisors (161006165336260).

204521345156444 is a wasteful number, since it uses less digits than its factorization.

204521345156444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087879495564 (or 1087879495562 counting only the distinct ones).

The product of its (nonzero) digits is 9216000, while the sum is 50.

The spelling of 204521345156444 in words is "two hundred four trillion, five hundred twenty-one billion, three hundred forty-five million, one hundred fifty-six thousand, four hundred forty-four".