205778417230 has 32 divisors (see below), whose sum is σ = 371217168000. Its totient is φ = 82130234112.

The previous prime is 205778417179. The next prime is 205778417231. The reversal of 205778417230 is 32714877502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205778417231) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 8684379 + ... + 8708041.

It is an arithmetic number, because the mean of its divisors is an integer number (11600536500).

Almost surely, 2^205778417230 is an apocalyptic number.

205778417230 is a deficient number, since it is larger than the sum of its proper divisors (165438750770).

205778417230 is a wasteful number, since it uses less digits than its factorization.

205778417230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25548.

The product of its (nonzero) digits is 658560, while the sum is 46.

The spelling of 205778417230 in words is "two hundred five billion, seven hundred seventy-eight million, four hundred seventeen thousand, two hundred thirty".