205451423334 has 12 divisors (see below), whose sum is σ = 445144750596. Its totient is φ = 68483807772.

The previous prime is 205451423329. The next prime is 205451423341. The reversal of 205451423334 is 433324154502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5706983964 + ... + 5706983999.

It is an arithmetic number, because the mean of its divisors is an integer number (37095395883).

Almost surely, 2^205451423334 is an apocalyptic number.

205451423334 is an abundant number, since it is smaller than the sum of its proper divisors (239693327262).

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

205451423334 is a wasteful number, since it uses less digits than its factorization.

205451423334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11413967971 (or 11413967968 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 205451423334 its reverse (433324154502), we get a palindrome (638775577836).

The spelling of 205451423334 in words is "two hundred five billion, four hundred fifty-one million, four hundred twenty-three thousand, three hundred thirty-four".