56016561066 has 16 divisors (see below), whose sum is σ = 115896333600. Its totient is φ = 18028318448.

The previous prime is 56016561061. The next prime is 56016561151. The reversal of 56016561066 is 66016561065.

56016561066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×56016561066² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56016561061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160966956 + ... + 160967303.

It is an arithmetic number, because the mean of its divisors is an integer number (7243520850).

Almost surely, 2^56016561066 is an apocalyptic number.

56016561066 is an abundant number, since it is smaller than the sum of its proper divisors (59879772534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56016561066 is a wasteful number, since it uses less digits than its factorization.

56016561066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321934293.

The product of its (nonzero) digits is 194400, while the sum is 42.

Subtracting 56016561066 from its reverse (66016561065), we obtain a palindrome (9999999999).

The spelling of 56016561066 in words is "fifty-six billion, sixteen million, five hundred sixty-one thousand, sixty-six".