56616450201 has 18 divisors (see below), whose sum is σ = 84920370522. Its totient is φ = 37744295760.

The previous prime is 56616450199. The next prime is 56616450217. The reversal of 56616450201 is 10205461665.

56616450201 is a `hidden beast` number, since 5 + 6 + 6 + 1 + 645 + 0 + 2 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 51254696025 + 5361754176 = 226395^2 + 73224^2 .

It is not a de Polignac number, because 56616450201 - 2¹ = 56616450199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56616450251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4308060 + ... + 4321181.

Almost surely, 2^56616450201 is an apocalyptic number.

It is an amenable number.

56616450201 is a deficient number, since it is larger than the sum of its proper divisors (28303920321).

56616450201 is an frugal number, since it uses more digits than its factorization.

56616450201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8629265 (or 8629244 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 56616450201 in words is "fifty-six billion, six hundred sixteen million, four hundred fifty thousand, two hundred one".