12651323456 has 28 divisors (see below), whose sum is σ = 25110879420. Its totient is φ = 6324172800.

The previous prime is 12651323423. The next prime is 12651323459. The reversal of 12651323456 is 65432315621.

It can be written as a sum of positive squares in 2 ways, for example, as 134189056 + 12517134400 = 11584^2 + 111880^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12651323459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281756 + ... + 323556.

Almost surely, 2^12651323456 is an apocalyptic number.

12651323456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12651323456 is a deficient number, since it is larger than the sum of its proper divisors (12459555964).

12651323456 is an equidigital number, since it uses as much as digits as its factorization.

12651323456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46542 (or 46532 counting only the distinct ones).

The product of its digits is 129600, while the sum is 38.

The spelling of 12651323456 in words is "twelve billion, six hundred fifty-one million, three hundred twenty-three thousand, four hundred fifty-six".