12535594532 has 24 divisors (see below), whose sum is σ = 22088785656. Its totient is φ = 6224594688.

The previous prime is 12535594517. The next prime is 12535594537. The reversal of 12535594532 is 23549553521.

It can be written as a sum of positive squares in 4 ways, for example, as 4302572836 + 8233021696 = 65594^2 + 90736^2 .

It is a super-2 number, since 2×12535594532² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12535594537) 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, 638738 + ... + 658070.

It is an arithmetic number, because the mean of its divisors is an integer number (920366069).

Almost surely, 2^12535594532 is an apocalyptic number.

It is an amenable number.

12535594532 is a deficient number, since it is larger than the sum of its proper divisors (9553191124).

12535594532 is a wasteful number, since it uses less digits than its factorization.

12535594532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20447 (or 20445 counting only the distinct ones).

The product of its digits is 810000, while the sum is 44.

The spelling of 12535594532 in words is "twelve billion, five hundred thirty-five million, five hundred ninety-four thousand, five hundred thirty-two".