12645405356 has 6 divisors (see below), whose sum is σ = 22129459380. Its totient is φ = 6322702676.

The previous prime is 12645405329. The next prime is 12645405389. The reversal of 12645405356 is 65350454621.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1580675666 + ... + 1580675673.

It is an arithmetic number, because the mean of its divisors is an integer number (3688243230).

Almost surely, 2^12645405356 is an apocalyptic number.

It is an amenable number.

12645405356 is a deficient number, since it is larger than the sum of its proper divisors (9484054024).

12645405356 is a wasteful number, since it uses less digits than its factorization.

12645405356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161351343 (or 3161351341 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 41.

Adding to 12645405356 its reverse (65350454621), we get a palindrome (77995859977).

The spelling of 12645405356 in words is "twelve billion, six hundred forty-five million, four hundred five thousand, three hundred fifty-six".