204434343224661 has 16 divisors (see below), whose sum is σ = 298048972889088. Its totient is φ = 123612131871600.

The previous prime is 204434343224621. The next prime is 204434343224669. The reversal of 204434343224661 is 166422343434402.

It is a happy number.

It is not a de Polignac number, because 204434343224661 - 2¹⁸ = 204434342962517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204434343224661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204434343224669) 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, 7186737631 + ... + 7186766076.

It is an arithmetic number, because the mean of its divisors is an integer number (18628060805568).

Almost surely, 2^{204434343224661} is an apocalyptic number.

It is an amenable number.

204434343224661 is a deficient number, since it is larger than the sum of its proper divisors (93614629664427).

204434343224661 is a wasteful number, since it uses less digits than its factorization.

204434343224661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14373504152.

The product of its (nonzero) digits is 7962624, while the sum is 48.

The spelling of 204434343224661 in words is "two hundred four trillion, four hundred thirty-four billion, three hundred forty-three million, two hundred twenty-four thousand, six hundred sixty-one".