1272343666219 has 4 divisors (see below), whose sum is σ = 1272346560360. Its totient is φ = 1272340772080.

The previous prime is 1272343666177. The next prime is 1272343666267. The reversal of 1272343666219 is 9126663432721.

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 1272343666219 - 2²¹ = 1272341569067 is a prime.

It is a super-2 number, since 2×1272343666219² (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 (1272343666519) 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, 636154 + ... + 1717375.

It is an arithmetic number, because the mean of its divisors is an integer number (318086640090).

Almost surely, 2^{1272343666219} is an apocalyptic number.

1272343666219 is a deficient number, since it is larger than the sum of its proper divisors (2894141).

1272343666219 is an equidigital number, since it uses as much as digits as its factorization.

1272343666219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2894140.

The product of its digits is 3919104, while the sum is 52.

The spelling of 1272343666219 in words is "one trillion, two hundred seventy-two billion, three hundred forty-three million, six hundred sixty-six thousand, two hundred nineteen".