56650616145 has 72 divisors (see below), whose sum is σ = 106570678968. Its totient is φ = 27742187520.

The previous prime is 56650616039. The next prime is 56650616159. The reversal of 56650616145 is 54161605665.

It can be written as a sum of positive squares in 12 ways, for example, as 27019469376 + 29631146769 = 164376^2 + 172137^2 .

It is not a de Polignac number, because 56650616145 - 2¹⁰ = 56650615121 is a prime.

It is a super-2 number, since 2×56650616145² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 56650616145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1263939 + ... + 1307991.

It is an arithmetic number, because the mean of its divisors is an integer number (1480148319).

Almost surely, 2^56650616145 is an apocalyptic number.

It is an amenable number.

56650616145 is a deficient number, since it is larger than the sum of its proper divisors (49920062823).

56650616145 is a wasteful number, since it uses less digits than its factorization.

56650616145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44163 (or 44119 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 56650616145 in words is "fifty-six billion, six hundred fifty million, six hundred sixteen thousand, one hundred forty-five".