205300982461 has 4 divisors (see below), whose sum is σ = 205461751932. Its totient is φ = 205140212992.

The previous prime is 205300982459. The next prime is 205300982483. The reversal of 205300982461 is 164289003502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43688942361 + 161612040100 = 209019^2 + 402010^2 .

It is a cyclic number.

It is not a de Polignac number, because 205300982461 - 2¹ = 205300982459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205300982441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80382820 + ... + 80385373.

It is an arithmetic number, because the mean of its divisors is an integer number (51365437983).

Almost surely, 2^205300982461 is an apocalyptic number.

It is an amenable number.

205300982461 is a deficient number, since it is larger than the sum of its proper divisors (160769471).

205300982461 is a wasteful number, since it uses less digits than its factorization.

205300982461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160769470.

The product of its (nonzero) digits is 103680, while the sum is 40.

Adding to 205300982461 its reverse (164289003502), we get a palindrome (369589985963).

The spelling of 205300982461 in words is "two hundred five billion, three hundred million, nine hundred eighty-two thousand, four hundred sixty-one".