1306680807867 has 4 divisors (see below), whose sum is σ = 1742241077160. Its totient is φ = 871120538576.

The previous prime is 1306680807853. The next prime is 1306680807931. The reversal of 1306680807867 is 7687080866031.

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

It is a cyclic number.

It is not a de Polignac number, because 1306680807867 - 2²² = 1306676613563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1306680807867.

It is not an unprimeable number, because it can be changed into a prime (1306680807847) 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, 217780134642 + ... + 217780134647.

It is an arithmetic number, because the mean of its divisors is an integer number (435560269290).

Almost surely, 2^{1306680807867} is an apocalyptic number.

1306680807867 is a deficient number, since it is larger than the sum of its proper divisors (435560269293).

1306680807867 is an equidigital number, since it uses as much as digits as its factorization.

1306680807867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435560269292.

The product of its (nonzero) digits is 16257024, while the sum is 60.

The spelling of 1306680807867 in words is "one trillion, three hundred six billion, six hundred eighty million, eight hundred seven thousand, eight hundred sixty-seven".