1666288800226 has 8 divisors (see below), whose sum is σ = 2531071595520. Its totient is φ = 822598268388.

The previous prime is 1666288800173. The next prime is 1666288800263. The reversal of 1666288800226 is 6220088826661.

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

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, 5273065666 + ... + 5273065981.

It is an arithmetic number, because the mean of its divisors is an integer number (316383949440).

Almost surely, 2^{1666288800226} is an apocalyptic number.

1666288800226 is a deficient number, since it is larger than the sum of its proper divisors (864782795294).

1666288800226 is a wasteful number, since it uses less digits than its factorization.

1666288800226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10546131728.

The product of its (nonzero) digits is 5308416, while the sum is 55.

The spelling of 1666288800226 in words is "one trillion, six hundred sixty-six billion, two hundred eighty-eight million, eight hundred thousand, two hundred twenty-six".