667873707777 has 40 divisors (see below), whose sum is σ = 1005393901952. Its totient is φ = 441817740000.

The previous prime is 667873707751. The next prime is 667873707803. The reversal of 667873707777 is 777707378766.

It is an interprime number because it is at equal distance from previous prime (667873707751) and next prime (667873707803).

It is not a de Polignac number, because 667873707777 - 2¹⁹ = 667873183489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667873707377) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9515502 + ... + 9585432.

Almost surely, 2^667873707777 is an apocalyptic number.

It is an amenable number.

667873707777 is a deficient number, since it is larger than the sum of its proper divisors (337520194175).

667873707777 is a wasteful number, since it uses less digits than its factorization.

667873707777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70851 (or 70842 counting only the distinct ones).

The product of its (nonzero) digits is 711541152, while the sum is 72.

The spelling of 667873707777 in words is "six hundred sixty-seven billion, eight hundred seventy-three million, seven hundred seven thousand, seven hundred seventy-seven".