12648403556 has 12 divisors (see below), whose sum is σ = 22198131900. Its totient is φ = 6306080160.

The previous prime is 12648403513. The next prime is 12648403577. The reversal of 12648403556 is 65530484621.

It can be written as a sum of positive squares in 2 ways, for example, as 11700748900 + 947654656 = 108170^2 + 30784^2 .

It is a super-2 number, since 2×12648403556² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4528835 + ... + 4531626.

It is an arithmetic number, because the mean of its divisors is an integer number (1849844325).

Almost surely, 2^12648403556 is an apocalyptic number.

It is an amenable number.

12648403556 is a deficient number, since it is larger than the sum of its proper divisors (9549728344).

12648403556 is a wasteful number, since it uses less digits than its factorization.

12648403556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9060814 (or 9060812 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 12648403556 in words is "twelve billion, six hundred forty-eight million, four hundred three thousand, five hundred fifty-six".