66666666677008 has 10 divisors (see below), whose sum is σ = 129166666686734. Its totient is φ = 33333333338496.

The previous prime is 66666666676937. The next prime is 66666666677089. The reversal of 66666666677008 is 80077666666666.

It can be written as a sum of positive squares in only one way, i.e., 41267364865024 + 25399301811984 = 6423968^2 + 5039772^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2083333333641 + ... + 2083333333672.

Almost surely, 2^{66666666677008} is an apocalyptic number.

It is an amenable number.

66666666677008 is a deficient number, since it is larger than the sum of its proper divisors (62500000009726).

66666666677008 is a wasteful number, since it uses less digits than its factorization.

66666666677008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4166666667321 (or 4166666667315 counting only the distinct ones).

The product of its (nonzero) digits is 3950456832, while the sum is 76.

The spelling of 66666666677008 in words is "sixty-six trillion, six hundred sixty-six billion, six hundred sixty-six million, six hundred seventy-seven thousand, eight".