2165656016 has 10 divisors (see below), whose sum is σ = 4195958562. Its totient is φ = 1082828000.

The previous prime is 2165656007. The next prime is 2165656019. The reversal of 2165656016 is 6106565612.

It can be written as a sum of positive squares in only one way, i.e., 1831497616 + 334158400 = 42796^2 + 18280^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165656019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67676735 + ... + 67676766.

Almost surely, 2^2165656016 is an apocalyptic number.

It is an amenable number.

2165656016 is a deficient number, since it is larger than the sum of its proper divisors (2030302546).

2165656016 is a wasteful number, since it uses less digits than its factorization.

2165656016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135353509 (or 135353503 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 2165656016 is about 46536.6094166732. The cubic root of 2165656016 is about 1293.7881192499.

The spelling of 2165656016 in words is "two billion, one hundred sixty-five million, six hundred fifty-six thousand, sixteen".