1206728449867 has 4 divisors (see below), whose sum is σ = 1206824915776. Its totient is φ = 1206631983960.

The previous prime is 1206728449811. The next prime is 1206728449909. The reversal of 1206728449867 is 7689448276021.

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 1206728449867 - 2⁷ = 1206728449739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1206728449799 and 1206728449808.

It is not an unprimeable number, because it can be changed into a prime (1206728149867) 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, 48214188 + ... + 48239209.

It is an arithmetic number, because the mean of its divisors is an integer number (301706228944).

Almost surely, 2^{1206728449867} is an apocalyptic number.

1206728449867 is a deficient number, since it is larger than the sum of its proper divisors (96465909).

1206728449867 is an equidigital number, since it uses as much as digits as its factorization.

1206728449867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96465908.

The product of its (nonzero) digits is 65028096, while the sum is 64.

The spelling of 1206728449867 in words is "one trillion, two hundred six billion, seven hundred twenty-eight million, four hundred forty-nine thousand, eight hundred sixty-seven".