1228704203666 has 8 divisors (see below), whose sum is σ = 1843805827440. Its totient is φ = 614102261188.

The previous prime is 1228704203653. The next prime is 1228704203687. The reversal of 1228704203666 is 6663024078221.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1228704203666.

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, 124914176 + ... + 124924011.

It is an arithmetic number, because the mean of its divisors is an integer number (230475728430).

Almost surely, 2^{1228704203666} is an apocalyptic number.

1228704203666 is a deficient number, since it is larger than the sum of its proper divisors (615101623774).

1228704203666 is a wasteful number, since it uses less digits than its factorization.

1228704203666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249840648.

The product of its (nonzero) digits is 1161216, while the sum is 47.

The spelling of 1228704203666 in words is "one trillion, two hundred twenty-eight billion, seven hundred four million, two hundred three thousand, six hundred sixty-six".