1272246161489 has 16 divisors (see below), whose sum is σ = 1293098526720. Its totient is φ = 1251521079120.

The previous prime is 1272246161479. The next prime is 1272246161579. The reversal of 1272246161489 is 9841616422721.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1272246161489 - 2²⁴ = 1272229384273 is a prime.

It is a super-2 number, since 2×1272246161489² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1272246161489.

It is not an unprimeable number, because it can be changed into a prime (1272246161479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23565044 + ... + 23618970.

It is an arithmetic number, because the mean of its divisors is an integer number (80818657920).

Almost surely, 2^{1272246161489} is an apocalyptic number.

It is an amenable number.

1272246161489 is a deficient number, since it is larger than the sum of its proper divisors (20852365231).

1272246161489 is an equidigital number, since it uses as much as digits as its factorization.

1272246161489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55100.

The product of its digits is 2322432, while the sum is 53.

The spelling of 1272246161489 in words is "one trillion, two hundred seventy-two billion, two hundred forty-six million, one hundred sixty-one thousand, four hundred eighty-nine".