56010055666 has 4 divisors (see below), whose sum is σ = 84015083502. Its totient is φ = 28005027832.

The previous prime is 56010055663. The next prime is 56010055723. The reversal of 56010055666 is 66655001065.

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

It can be written as a sum of positive squares in only one way, i.e., 32227789441 + 23782266225 = 179521^2 + 154215^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (56010055663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14002513915 + ... + 14002513918.

Almost surely, 2^56010055666 is an apocalyptic number.

56010055666 is a deficient number, since it is larger than the sum of its proper divisors (28005027836).

56010055666 is a wasteful number, since it uses less digits than its factorization.

56010055666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28005027835.

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 56010055666 in words is "fifty-six billion, ten million, fifty-five thousand, six hundred sixty-six".