1272904003453 has 4 divisors (see below), whose sum is σ = 1275141093660. Its totient is φ = 1270666913248.

The previous prime is 1272904003451. The next prime is 1272904003517. The reversal of 1272904003453 is 3543004092721.

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 495027630724 + 777876372729 = 703582^2 + 881973^2 .

It is a cyclic number.

It is not a de Polignac number, because 1272904003453 - 2¹ = 1272904003451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272904003451) 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, 1118544250 + ... + 1118545387.

It is an arithmetic number, because the mean of its divisors is an integer number (318785273415).

Almost surely, 2^{1272904003453} is an apocalyptic number.

It is an amenable number.

1272904003453 is a deficient number, since it is larger than the sum of its proper divisors (2237090207).

1272904003453 is an equidigital number, since it uses as much as digits as its factorization.

1272904003453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2237090206.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 1272904003453 in words is "one trillion, two hundred seventy-two billion, nine hundred four million, three thousand, four hundred fifty-three".