1066677678137 has 4 divisors (see below), whose sum is σ = 1071103726836. Its totient is φ = 1062251629440.

The previous prime is 1066677678127. The next prime is 1066677678161. The reversal of 1066677678137 is 7318767766601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 334941145081 + 731736533056 = 578741^2 + 855416^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066677678137 - 2²⁰ = 1066676629561 is a prime.

It is a super-2 number, since 2×1066677678137² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066677678127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2213023988 + ... + 2213024469.

It is an arithmetic number, because the mean of its divisors is an integer number (267775931709).

Almost surely, 2^{1066677678137} is an apocalyptic number.

It is an amenable number.

1066677678137 is a deficient number, since it is larger than the sum of its proper divisors (4426048699).

1066677678137 is an equidigital number, since it uses as much as digits as its factorization.

1066677678137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4426048698.

The product of its (nonzero) digits is 74680704, while the sum is 65.

The spelling of 1066677678137 in words is "one trillion, sixty-six billion, six hundred seventy-seven million, six hundred seventy-eight thousand, one hundred thirty-seven".