1282855873617 has 12 divisors (see below), whose sum is σ = 1853267729040. Its totient is φ = 855120161688.

The previous prime is 1282855873589. The next prime is 1282855873643. The reversal of 1282855873617 is 7163785582821.

1282855873617 is a `hidden beast` number, since 1 + 2 + 8 + 2 + 8 + 5 + 5 + 8 + 7 + 3 + 617 = 666.

It is not a de Polignac number, because 1282855873617 - 2¹⁸ = 1282855611473 is a prime.

It is a super-3 number, since 3×1282855873617³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1282855873657) 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 11 ways as a sum of consecutive naturals, for example, 9687867 + ... + 9819392.

It is an arithmetic number, because the mean of its divisors is an integer number (154438977420).

Almost surely, 2^{1282855873617} is an apocalyptic number.

It is an amenable number.

1282855873617 is a deficient number, since it is larger than the sum of its proper divisors (570411855423).

1282855873617 is a wasteful number, since it uses less digits than its factorization.

1282855873617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19514572 (or 19514569 counting only the distinct ones).

The product of its digits is 45158400, while the sum is 63.

The spelling of 1282855873617 in words is "one trillion, two hundred eighty-two billion, eight hundred fifty-five million, eight hundred seventy-three thousand, six hundred seventeen".