56001016066 has 4 divisors (see below), whose sum is σ = 84001524102. Its totient is φ = 28000508032.

The previous prime is 56001016003. The next prime is 56001016091. The reversal of 56001016066 is 66061010065.

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., 51089108841 + 4911907225 = 226029^2 + 70085^2 .

It is a super-2 number, since 2×56001016066² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14000254015 + ... + 14000254018.

Almost surely, 2^56001016066 is an apocalyptic number.

56001016066 is a deficient number, since it is larger than the sum of its proper divisors (28000508036).

56001016066 is a wasteful number, since it uses less digits than its factorization.

56001016066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28000508035.

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 56001016066 in words is "fifty-six billion, one million, sixteen thousand, sixty-six".