556662100066 has 8 divisors (see below), whose sum is σ = 835001609004. Its totient is φ = 278328230400.

The previous prime is 556662100061. The next prime is 556662100079. The reversal of 556662100066 is 660001266655.

It can be written as a sum of positive squares in 2 ways, for example, as 519078461841 + 37583638225 = 720471^2 + 193865^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 556662099995 and 556662100031.

It is not an unprimeable number, because it can be changed into a prime (556662100061) 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, 1153735 + ... + 1563466.

Almost surely, 2^556662100066 is an apocalyptic number.

556662100066 is a deficient number, since it is larger than the sum of its proper divisors (278339508938).

556662100066 is a wasteful number, since it uses less digits than its factorization.

556662100066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819636.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 556662100066 in words is "five hundred fifty-six billion, six hundred sixty-two million, one hundred thousand, sixty-six".