12820533255 has 32 divisors (see below), whose sum is σ = 24132772800. Its totient is φ = 6435403776.

The previous prime is 12820533217. The next prime is 12820533269. The reversal of 12820533255 is 55233502821.

12820533255 is a `hidden beast` number, since 1 + 282 + 0 + 53 + 325 + 5 = 666.

It is not a de Polignac number, because 12820533255 - 2⁷ = 12820533127 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2790850 + ... + 2795439.

It is an arithmetic number, because the mean of its divisors is an integer number (754149150).

Almost surely, 2^12820533255 is an apocalyptic number.

12820533255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12820533255 is a deficient number, since it is larger than the sum of its proper divisors (11312239545).

12820533255 is a wasteful number, since it uses less digits than its factorization.

12820533255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5586320 (or 5586314 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 12820533255 in words is "twelve billion, eight hundred twenty million, five hundred thirty-three thousand, two hundred fifty-five".