1305668905438 has 8 divisors (see below), whose sum is σ = 1958554411200. Its totient is φ = 652817435040.

The previous prime is 1305668905381. The next prime is 1305668905483. The reversal of 1305668905438 is 8345098665031.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8412718 + ... + 8566513.

It is an arithmetic number, because the mean of its divisors is an integer number (244819301400).

Almost surely, 2^{1305668905438} is an apocalyptic number.

1305668905438 is a deficient number, since it is larger than the sum of its proper divisors (652885505762).

1305668905438 is a wasteful number, since it uses less digits than its factorization.

1305668905438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17017682.

The product of its (nonzero) digits is 18662400, while the sum is 58.

The spelling of 1305668905438 in words is "one trillion, three hundred five billion, six hundred sixty-eight million, nine hundred five thousand, four hundred thirty-eight".