12662424640 has 28 divisors (see below), whose sum is σ = 30152399436. Its totient is φ = 5064969728.

The previous prime is 12662424617. The next prime is 12662424661. The reversal of 12662424640 is 4642426621.

It can be written as a sum of positive squares in 2 ways, for example, as 4358112256 + 8304312384 = 66016^2 + 91128^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12662424640.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19784719 + ... + 19785358.

Almost surely, 2^12662424640 is an apocalyptic number.

12662424640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12662424640 is an abundant number, since it is smaller than the sum of its proper divisors (17489974796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12662424640 is an equidigital number, since it uses as much as digits as its factorization.

12662424640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39570094 (or 39570084 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 37.

The spelling of 12662424640 in words is "twelve billion, six hundred sixty-two million, four hundred twenty-four thousand, six hundred forty".