4000666404266 has 16 divisors (see below), whose sum is σ = 7261713809856. Its totient is φ = 1613714179776.

The previous prime is 4000666404209. The next prime is 4000666404307. The reversal of 4000666404266 is 6624046660004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8404761116 + ... + 8404761591.

It is an arithmetic number, because the mean of its divisors is an integer number (453857113116).

Almost surely, 2^{4000666404266} is an apocalyptic number.

4000666404266 is a deficient number, since it is larger than the sum of its proper divisors (3261047405590).

4000666404266 is a wasteful number, since it uses less digits than its factorization.

4000666404266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16809522733.

The product of its (nonzero) digits is 995328, while the sum is 44.

The spelling of 4000666404266 in words is "four trillion, six hundred sixty-six million, four hundred four thousand, two hundred sixty-six".