6216542065 has 16 divisors (see below), whose sum is σ = 8153464320. Its totient is φ = 4529698560.

The previous prime is 6216542063. The next prime is 6216542083. The reversal of 6216542065 is 5602456126.

It is not a de Polignac number, because 6216542065 - 2¹ = 6216542063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6216542063) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1176975 + ... + 1182244.

It is an arithmetic number, because the mean of its divisors is an integer number (509591520).

Almost surely, 2^6216542065 is an apocalyptic number.

It is an amenable number.

6216542065 is a deficient number, since it is larger than the sum of its proper divisors (1936922255).

6216542065 is a wasteful number, since it uses less digits than its factorization.

6216542065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2359272.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 6216542065 is about 78845.0509860955. The cubic root of 6216542065 is about 1838.7229308921.

The spelling of 6216542065 in words is "six billion, two hundred sixteen million, five hundred forty-two thousand, sixty-five".