56643805448 has 16 divisors (see below), whose sum is σ = 106218140460. Its totient is φ = 28318968000.

The previous prime is 56643805447. The next prime is 56643805483. The reversal of 56643805448 is 84450834665.

It can be written as a sum of positive squares in 2 ways, for example, as 50221706404 + 6422099044 = 224102^2 + 80138^2 .

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 56643805448.

It is not an unprimeable number, because it can be changed into a prime (56643805447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283703 + ... + 440198.

Almost surely, 2^56643805448 is an apocalyptic number.

It is an amenable number.

56643805448 is a deficient number, since it is larger than the sum of its proper divisors (49574335012).

56643805448 is a wasteful number, since it uses less digits than its factorization.

56643805448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733688 (or 733684 counting only the distinct ones).

The product of its (nonzero) digits is 11059200, while the sum is 53.

The spelling of 56643805448 in words is "fifty-six billion, six hundred forty-three million, eight hundred five thousand, four hundred forty-eight".