12640510532 has 24 divisors (see below), whose sum is σ = 25076318400. Its totient is φ = 5527024416.

The previous prime is 12640510511. The next prime is 12640510537. The reversal of 12640510532 is 23501504621.

12640510532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12640510495 and 12640510504.

It is not an unprimeable number, because it can be changed into a prime (12640510537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6396032 + ... + 6398007.

It is an arithmetic number, because the mean of its divisors is an integer number (1044846600).

Almost surely, 2^12640510532 is an apocalyptic number.

It is an amenable number.

12640510532 is a deficient number, since it is larger than the sum of its proper divisors (12435807868).

12640510532 is a wasteful number, since it uses less digits than its factorization.

12640510532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12794075 (or 12794073 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 12640510532 in words is "twelve billion, six hundred forty million, five hundred ten thousand, five hundred thirty-two".