12556135333 has 12 divisors (see below), whose sum is σ = 14748196512. Its totient is φ = 10471518000.

The previous prime is 12556135301. The next prime is 12556135343. The reversal of 12556135333 is 33353165521.

It is not a de Polignac number, because 12556135333 - 2⁵ = 12556135301 is a prime.

It is a super-2 number, since 2×12556135333² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 12556135292 and 12556135301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12556135343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 645543 + ... + 664708.

It is an arithmetic number, because the mean of its divisors is an integer number (1229016376).

Almost surely, 2^12556135333 is an apocalyptic number.

It is an amenable number.

12556135333 is a deficient number, since it is larger than the sum of its proper divisors (2192061179).

12556135333 is an equidigital number, since it uses as much as digits as its factorization.

12556135333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310332 (or 1310295 counting only the distinct ones).

The product of its digits is 121500, while the sum is 37.

The spelling of 12556135333 in words is "twelve billion, five hundred fifty-six million, one hundred thirty-five thousand, three hundred thirty-three".