666214412666 has 32 divisors (see below), whose sum is σ = 1156926291840. Its totient is φ = 284362214400.

The previous prime is 666214412629. The next prime is 666214412723.

666214412666 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1864655 + ... + 2193026.

It is an arithmetic number, because the mean of its divisors is an integer number (36153946620).

Almost surely, 2^666214412666 is an apocalyptic number.

666214412666 is a deficient number, since it is larger than the sum of its proper divisors (490711879174).

666214412666 is a wasteful number, since it uses less digits than its factorization.

666214412666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4058150.

The product of its digits is 2985984, while the sum is 50.

The spelling of 666214412666 in words is "six hundred sixty-six billion, two hundred fourteen million, four hundred twelve thousand, six hundred sixty-six".