1273128471673 has 8 divisors (see below), whose sum is σ = 1340148931200. Its totient is φ = 1206109381968.

The previous prime is 1273128471631. The next prime is 1273128471691. The reversal of 1273128471673 is 3761748213721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1273128471673 is a prime.

It is a super-2 number, since 2×1273128471673² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1273128471673.

It is not an unprimeable number, because it can be changed into a prime (1273128471073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1963488 + ... + 2530126.

It is an arithmetic number, because the mean of its divisors is an integer number (167518616400).

Almost surely, 2^{1273128471673} is an apocalyptic number.

It is an amenable number.

1273128471673 is a deficient number, since it is larger than the sum of its proper divisors (67020459527).

1273128471673 is a wasteful number, since it uses less digits than its factorization.

1273128471673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684911.

The product of its digits is 2370816, while the sum is 52.

The spelling of 1273128471673 in words is "one trillion, two hundred seventy-three billion, one hundred twenty-eight million, four hundred seventy-one thousand, six hundred seventy-three".