205304344642 has 8 divisors (see below), whose sum is σ = 321345930816. Its totient is φ = 98189034372.

The previous prime is 205304344631. The next prime is 205304344657. The reversal of 205304344642 is 246443403502.

205304344642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×205304344642² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2231568918 + ... + 2231569009.

It is an arithmetic number, because the mean of its divisors is an integer number (40168241352).

Almost surely, 2^205304344642 is an apocalyptic number.

205304344642 is a deficient number, since it is larger than the sum of its proper divisors (116041586174).

205304344642 is a wasteful number, since it uses less digits than its factorization.

205304344642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4463137952.

The product of its (nonzero) digits is 276480, while the sum is 37.

The spelling of 205304344642 in words is "two hundred five billion, three hundred four million, three hundred forty-four thousand, six hundred forty-two".