1280538280253 has 16 divisors (see below), whose sum is σ = 1304702847360. Its totient is φ = 1256605655616.

The previous prime is 1280538280249. The next prime is 1280538280327. The reversal of 1280538280253 is 3520828350821.

It is a cyclic number.

It is not a de Polignac number, because 1280538280253 - 2² = 1280538280249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1280538280198 and 1280538280207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280528280253) 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 15 ways as a sum of consecutive naturals, for example, 53439551 + ... + 53463507.

It is an arithmetic number, because the mean of its divisors is an integer number (81543927960).

Almost surely, 2^{1280538280253} is an apocalyptic number.

It is an amenable number.

1280538280253 is a deficient number, since it is larger than the sum of its proper divisors (24164567107).

1280538280253 is a wasteful number, since it uses less digits than its factorization.

1280538280253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28756.

The product of its (nonzero) digits is 921600, while the sum is 47.

The spelling of 1280538280253 in words is "one trillion, two hundred eighty billion, five hundred thirty-eight million, two hundred eighty thousand, two hundred fifty-three".