12012523533 has 8 divisors (see below), whose sum is σ = 17796331200. Its totient is φ = 8008349004.

The previous prime is 12012523499. The next prime is 12012523603. The reversal of 12012523533 is 33532521021.

It is a happy number.

12012523533 is a `hidden beast` number, since 1 + 2 + 0 + 125 + 2 + 3 + 533 = 666.

It is not a de Polignac number, because 12012523533 - 2⁹ = 12012523021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 444908279 = 12012523533 / (1 + 2 + 0 + 1 + 2 + 5 + 2 + 3 + 5 + 3 + 3).

It is a junction number, because it is equal to n+sod(n) for n = 12012523497 and 12012523506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012524533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222454113 + ... + 222454166.

It is an arithmetic number, because the mean of its divisors is an integer number (2224541400).

Almost surely, 2^12012523533 is an apocalyptic number.

It is an amenable number.

12012523533 is a deficient number, since it is larger than the sum of its proper divisors (5783807667).

12012523533 is an equidigital number, since it uses as much as digits as its factorization.

12012523533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444908288 (or 444908282 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The spelling of 12012523533 in words is "twelve billion, twelve million, five hundred twenty-three thousand, five hundred thirty-three".