666007767110777 has 64 divisors (see below), whose sum is σ = 873345781002240. Its totient is φ = 493471095346944.

The previous prime is 666007767110773. The next prime is 666007767110783. The reversal of 666007767110777 is 777011767700666.

It is a happy number.

It is not a de Polignac number, because 666007767110777 - 2² = 666007767110773 is a prime.

It is not an unprimeable number, because it can be changed into a prime (666007767110773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45375674 + ... + 58232012.

It is an arithmetic number, because the mean of its divisors is an integer number (13646027828160).

Almost surely, 2^{666007767110777} is an apocalyptic number.

It is an amenable number.

666007767110777 is a deficient number, since it is larger than the sum of its proper divisors (207338013891463).

666007767110777 is a wasteful number, since it uses less digits than its factorization.

666007767110777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12856902.

The product of its (nonzero) digits is 152473104, while the sum is 68.

The spelling of 666007767110777 in words is "six hundred sixty-six trillion, seven billion, seven hundred sixty-seven million, one hundred ten thousand, seven hundred seventy-seven".