12915145648 has 10 divisors (see below), whose sum is σ = 25023094724. Its totient is φ = 6457572816.

The previous prime is 12915145643. The next prime is 12915145657. The reversal of 12915145648 is 84654151921.

12915145648 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 = 12915145598 and 12915145607.

It is not an unprimeable number, because it can be changed into a prime (12915145643) 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 as a sum of consecutive naturals, namely, 403598286 + ... + 403598317.

Almost surely, 2^12915145648 is an apocalyptic number.

It is an amenable number.

12915145648 is a deficient number, since it is larger than the sum of its proper divisors (12107949076).

12915145648 is an equidigital number, since it uses as much as digits as its factorization.

12915145648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807196611 (or 807196605 counting only the distinct ones).

The product of its digits is 345600, while the sum is 46.

The spelling of 12915145648 in words is "twelve billion, nine hundred fifteen million, one hundred forty-five thousand, six hundred forty-eight".