226404551666 has 12 divisors (see below), whose sum is σ = 340965423006. Its totient is φ = 112751208000.

The previous prime is 226404551641. The next prime is 226404551677. The reversal of 226404551666 is 666155404622.

It can be written as a sum of positive squares in only one way, i.e., 220543883641 + 5860668025 = 469621^2 + 76555^2 .

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 226404551666.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 772415 + ... + 1024418.

Almost surely, 2^226404551666 is an apocalyptic number.

226404551666 is a deficient number, since it is larger than the sum of its proper divisors (114560871340).

226404551666 is an equidigital number, since it uses as much as digits as its factorization.

226404551666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1797337 (or 1797086 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 47.

The spelling of 226404551666 in words is "two hundred twenty-six billion, four hundred four million, five hundred fifty-one thousand, six hundred sixty-six".