56628801601 has 4 divisors (see below), whose sum is σ = 56652587604. Its totient is φ = 56605015600.

The previous prime is 56628801599. The next prime is 56628801667. The reversal of 56628801601 is 10610882665.

56628801601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23218445376 + 33410356225 = 152376^2 + 182785^2 .

It is a cyclic number.

It is not a de Polignac number, because 56628801601 - 2¹ = 56628801599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56628805601) 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, 11889430 + ... + 11894191.

It is an arithmetic number, because the mean of its divisors is an integer number (14163146901).

Almost surely, 2^56628801601 is an apocalyptic number.

It is an amenable number.

56628801601 is a deficient number, since it is larger than the sum of its proper divisors (23786003).

56628801601 is a wasteful number, since it uses less digits than its factorization.

56628801601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23786002.

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 56628801601 in words is "fifty-six billion, six hundred twenty-eight million, eight hundred one thousand, six hundred one".