12643824370 has 16 divisors (see below), whose sum is σ = 22890441240. Its totient is φ = 5028294784.

The previous prime is 12643824367. The next prime is 12643824383. The reversal of 12643824370 is 7342834621.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12343876609 + 299947761 = 111103^2 + 17319^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3652555 + ... + 3656014.

Almost surely, 2^12643824370 is an apocalyptic number.

12643824370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12643824370 is a deficient number, since it is larger than the sum of its proper divisors (10246616870).

12643824370 is a wasteful number, since it uses less digits than its factorization.

12643824370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7308749.

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 12643824370 in words is "twelve billion, six hundred forty-three million, eight hundred twenty-four thousand, three hundred seventy".