205023434343364 has 96 divisors (see below), whose sum is σ = 453641288679936. Its totient is φ = 78895610357760.

The previous prime is 205023434343359. The next prime is 205023434343367. The reversal of 205023434343364 is 463343434320502.

It is not an unprimeable number, because it can be changed into a prime (205023434343367) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50056524 + ... + 53997244.

It is an arithmetic number, because the mean of its divisors is an integer number (4725430090416).

Almost surely, 2^{205023434343364} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 205023434343364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226820644339968).

205023434343364 is an abundant number, since it is smaller than the sum of its proper divisors (248617854336572).

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

205023434343364 is a wasteful number, since it uses less digits than its factorization.

205023434343364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3944645 (or 3944643 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 46.

Adding to 205023434343364 its reverse (463343434320502), we get a palindrome (668366868663866).

The spelling of 205023434343364 in words is "two hundred five trillion, twenty-three billion, four hundred thirty-four million, three hundred forty-three thousand, three hundred sixty-four".