56506665116165 has 12 divisors (see below), whose sum is σ = 74532758286252. Its totient is φ = 41095756447680.

The previous prime is 56506665116087. The next prime is 56506665116219. The reversal of 56506665116165 is 56161156660565.

It is a happy number.

56506665116165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10940952059521 + 45565713056644 = 3307711^2 + 6750238^2 .

It is not a de Polignac number, because 56506665116165 - 2¹⁰ = 56506665115141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46699722632 + ... + 46699723841.

It is an arithmetic number, because the mean of its divisors is an integer number (6211063190521).

Almost surely, 2^{56506665116165} is an apocalyptic number.

56506665116165 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56506665116165 is a deficient number, since it is larger than the sum of its proper divisors (18026093170087).

56506665116165 is a wasteful number, since it uses less digits than its factorization.

56506665116165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93399446500 (or 93399446489 counting only the distinct ones).

The product of its (nonzero) digits is 29160000, while the sum is 59.

The spelling of 56506665116165 in words is "fifty-six trillion, five hundred six billion, six hundred sixty-five million, one hundred sixteen thousand, one hundred sixty-five".