1278128458453 has 8 divisors (see below), whose sum is σ = 1593510805440. Its totient is φ = 995944253280.

The previous prime is 1278128458433. The next prime is 1278128458483. The reversal of 1278128458453 is 3548548218721.

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

It is a cyclic number.

It is not a de Polignac number, because 1278128458453 - 2¹⁷ = 1278128327381 is a prime.

It is a super-2 number, since 2×1278128458453² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1278128458433) 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 7 ways as a sum of consecutive naturals, for example, 8299535368 + ... + 8299535521.

It is an arithmetic number, because the mean of its divisors is an integer number (199188850680).

Almost surely, 2^{1278128458453} is an apocalyptic number.

It is an amenable number.

1278128458453 is a deficient number, since it is larger than the sum of its proper divisors (315382346987).

1278128458453 is a wasteful number, since it uses less digits than its factorization.

1278128458453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16599070907.

The product of its digits is 17203200, while the sum is 58.

The spelling of 1278128458453 in words is "one trillion, two hundred seventy-eight billion, one hundred twenty-eight million, four hundred fifty-eight thousand, four hundred fifty-three".