666111301204 has 12 divisors (see below), whose sum is σ = 1166055807700. Its totient is φ = 332952499008.

The previous prime is 666111301187. The next prime is 666111301213. The reversal of 666111301204 is 402103111666.

It can be written as a sum of positive squares in 2 ways, for example, as 222168937104 + 443942364100 = 471348^2 + 666290^2 .

It is a congruent number.

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, 25773369 + ... + 25799200.

Almost surely, 2^666111301204 is an apocalyptic number.

It is an amenable number.

666111301204 is a deficient number, since it is larger than the sum of its proper divisors (499944506496).

666111301204 is a wasteful number, since it uses less digits than its factorization.

666111301204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51575802 (or 51575800 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 666111301204 in words is "six hundred sixty-six billion, one hundred eleven million, three hundred one thousand, two hundred four".