12533513504 has 12 divisors (see below), whose sum is σ = 24675354774. Its totient is φ = 6266756736.

The previous prime is 12533513479. The next prime is 12533513507. The reversal of 12533513504 is 40531533521.

It can be written as a sum of positive squares in only one way, i.e., 11695989904 + 837523600 = 108148^2 + 28940^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 391672297 = 12533513504 / (1 + 2 + 5 + 3 + 3 + 5 + 1 + 3 + 5 + 0 + 4).

It is not an unprimeable number, because it can be changed into a prime (12533513507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195836117 + ... + 195836180.

Almost surely, 2^12533513504 is an apocalyptic number.

It is an amenable number.

12533513504 is a deficient number, since it is larger than the sum of its proper divisors (12141841270).

12533513504 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 9 representation: 12533513504 = (35314013255)₉.

12533513504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391672307 (or 391672299 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 32.

The spelling of 12533513504 in words is "twelve billion, five hundred thirty-three million, five hundred thirteen thousand, five hundred four".