12621032456 has 16 divisors (see below), whose sum is σ = 23949550800. Its totient is φ = 6234485584.

The previous prime is 12621032453. The next prime is 12621032467. The reversal of 12621032456 is 65423012621.

It is not an unprimeable number, because it can be changed into a prime (12621032453) 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, 9503126 + ... + 9504453.

It is an arithmetic number, because the mean of its divisors is an integer number (1496846925).

Almost surely, 2^12621032456 is an apocalyptic number.

It is an amenable number.

12621032456 is a deficient number, since it is larger than the sum of its proper divisors (11328518344).

12621032456 is a wasteful number, since it uses less digits than its factorization.

12621032456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19007668 (or 19007664 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 12621032456 in words is "twelve billion, six hundred twenty-one million, thirty-two thousand, four hundred fifty-six".