1280675809153 has 4 divisors (see below), whose sum is σ = 1379189332948. Its totient is φ = 1182162285360.

The previous prime is 1280675809129. The next prime is 1280675809157. The reversal of 1280675809153 is 3519085760821.

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 514959806449 + 765716002704 = 717607^2 + 875052^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1280675809153 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1280675809094 and 1280675809103.

It is not an unprimeable number, because it can be changed into a prime (1280675809157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49256761878 + ... + 49256761903.

It is an arithmetic number, because the mean of its divisors is an integer number (344797333237).

Almost surely, 2^{1280675809153} is an apocalyptic number.

1280675809153 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1280675809153 is a deficient number, since it is larger than the sum of its proper divisors (98513523795).

1280675809153 is an equidigital number, since it uses as much as digits as its factorization.

1280675809153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98513523794.

The product of its (nonzero) digits is 3628800, while the sum is 55.

The spelling of 1280675809153 in words is "one trillion, two hundred eighty billion, six hundred seventy-five million, eight hundred nine thousand, one hundred fifty-three".