421111006666 has 8 divisors (see below), whose sum is σ = 721904582880. Its totient is φ = 180476145708.

The previous prime is 421111006663. The next prime is 421111006703. The reversal of 421111006666 is 666600111124.

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

It is not an unprimeable number, because it can be changed into a prime (421111006661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15039678796 + ... + 15039678823.

It is an arithmetic number, because the mean of its divisors is an integer number (90238072860).

Almost surely, 2^421111006666 is an apocalyptic number.

421111006666 is a deficient number, since it is larger than the sum of its proper divisors (300793576214).

421111006666 is a wasteful number, since it uses less digits than its factorization.

421111006666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30079357628.

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 421111006666 in words is "four hundred twenty-one billion, one hundred eleven million, six thousand, six hundred sixty-six".