205241617295 has 32 divisors (see below), whose sum is σ = 289391054400. Its totient is φ = 137763901440.

The previous prime is 205241617267. The next prime is 205241617309. The reversal of 205241617295 is 592716142502.

It is a Cunningham number, because it is equal to 453036²-1.

It is not a de Polignac number, because 205241617295 - 2²⁸ = 204973181839 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5872031 + ... + 5906879.

It is an arithmetic number, because the mean of its divisors is an integer number (9043470450).

Almost surely, 2^205241617295 is an apocalyptic number.

205241617295 is a deficient number, since it is larger than the sum of its proper divisors (84149437105).

205241617295 is a wasteful number, since it uses less digits than its factorization.

205241617295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43115.

The product of its (nonzero) digits is 302400, while the sum is 44.

Adding to 205241617295 its reverse (592716142502), we get a palindrome (797957759797).

The spelling of 205241617295 in words is "two hundred five billion, two hundred forty-one million, six hundred seventeen thousand, two hundred ninety-five".