1305604660166 has 4 divisors (see below), whose sum is σ = 1958406990252. Its totient is φ = 652802330082.

The previous prime is 1305604660153. The next prime is 1305604660177. The reversal of 1305604660166 is 6610664065031.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 326401165040 + ... + 326401165043.

It is an arithmetic number, because the mean of its divisors is an integer number (489601747563).

Almost surely, 2^{1305604660166} is an apocalyptic number.

1305604660166 is a deficient number, since it is larger than the sum of its proper divisors (652802330086).

1305604660166 is an equidigital number, since it uses as much as digits as its factorization.

1305604660166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652802330085.

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 1305604660166 in words is "one trillion, three hundred five billion, six hundred four million, six hundred sixty thousand, one hundred sixty-six".