205397584834 has 8 divisors (see below), whose sum is σ = 331796098620. Its totient is φ = 94798885296.

The previous prime is 205397584801. The next prime is 205397584961. The reversal of 205397584834 is 438485793502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 202765587025 + 2631997809 = 450295^2 + 51303^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3949953529 + ... + 3949953580.

Almost surely, 2^205397584834 is an apocalyptic number.

205397584834 is a deficient number, since it is larger than the sum of its proper divisors (126398513786).

205397584834 is a wasteful number, since it uses less digits than its factorization.

205397584834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7899907124.

The product of its (nonzero) digits is 29030400, while the sum is 58.

The spelling of 205397584834 in words is "two hundred five billion, three hundred ninety-seven million, five hundred eighty-four thousand, eight hundred thirty-four".