1255012656343 has 2 divisors, whose sum is σ = 1255012656344. Its totient is φ = 1255012656342.

The previous prime is 1255012656323. The next prime is 1255012656397. The reversal of 1255012656343 is 3436562105521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1255012656343 is a prime.

It is a super-3 number, since 3×1255012656343³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1255012656343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1255012656323) 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 as a sum of consecutive naturals, namely, 627506328171 + 627506328172.

It is an arithmetic number, because the mean of its divisors is an integer number (627506328172).

Almost surely, 2^{1255012656343} is an apocalyptic number.

1255012656343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255012656343 is an equidigital number, since it uses as much as digits as its factorization.

1255012656343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 1255012656343 in words is "one trillion, two hundred fifty-five billion, twelve million, six hundred fifty-six thousand, three hundred forty-three".