666111301203 has 16 divisors (see below), whose sum is σ = 934960798080. Its totient is φ = 420671389824.

The previous prime is 666111301187. The next prime is 666111301213. The reversal of 666111301203 is 302103111666.

It is not a de Polignac number, because 666111301203 - 2⁴ = 666111301187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (666111301213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383500 + ... + 1216262.

It is an arithmetic number, because the mean of its divisors is an integer number (58435049880).

Almost surely, 2^666111301203 is an apocalyptic number.

666111301203 is a deficient number, since it is larger than the sum of its proper divisors (268849496877).

666111301203 is a wasteful number, since it uses less digits than its factorization.

666111301203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846818.

The product of its (nonzero) digits is 3888, while the sum is 30.

Adding to 666111301203 its reverse (302103111666), we get a palindrome (968214412869).

The spelling of 666111301203 in words is "six hundred sixty-six billion, one hundred eleven million, three hundred one thousand, two hundred three".