56481881648 has 20 divisors (see below), whose sum is σ = 109783283688. Its totient is φ = 28150711680.

The previous prime is 56481881627. The next prime is 56481881663. The reversal of 56481881648 is 84618818465.

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, 5634158 + ... + 5644173.

Almost surely, 2^56481881648 is an apocalyptic number.

It is an amenable number.

56481881648 is a deficient number, since it is larger than the sum of its proper divisors (53301402040).

56481881648 is a wasteful number, since it uses less digits than its factorization.

56481881648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11278652 (or 11278646 counting only the distinct ones).

The product of its digits is 11796480, while the sum is 59.

The spelling of 56481881648 in words is "fifty-six billion, four hundred eighty-one million, eight hundred eighty-one thousand, six hundred forty-eight".