205451442235 has 32 divisors (see below), whose sum is σ = 285084116352. Its totient is φ = 140782172160.

The previous prime is 205451442227. The next prime is 205451442241. The reversal of 205451442235 is 532244154502.

It is not a de Polignac number, because 205451442235 - 2³ = 205451442227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205451442194 and 205451442203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1230904 + ... + 1387813.

It is an arithmetic number, because the mean of its divisors is an integer number (8908878636).

Almost surely, 2^205451442235 is an apocalyptic number.

205451442235 is a deficient number, since it is larger than the sum of its proper divisors (79632674117).

205451442235 is a wasteful number, since it uses less digits than its factorization.

205451442235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2618823.

The product of its (nonzero) digits is 192000, while the sum is 37.

Adding to 205451442235 its reverse (532244154502), we get a palindrome (737695596737).

The spelling of 205451442235 in words is "two hundred five billion, four hundred fifty-one million, four hundred forty-two thousand, two hundred thirty-five".