64564161240216 has 32 divisors (see below), whose sum is σ = 176084076110400. Its totient is φ = 19564897345440.

The previous prime is 64564161240211. The next prime is 64564161240223. The reversal of 64564161240216 is 61204216146546.

64564161240216 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 2×64564161240216² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64564161240211) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 122280608146 + ... + 122280608673.

It is an arithmetic number, because the mean of its divisors is an integer number (5502627378450).

Almost surely, 2^{64564161240216} is an apocalyptic number.

64564161240216 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

64564161240216 is an abundant number, since it is smaller than the sum of its proper divisors (111519914870184).

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

64564161240216 is a wasteful number, since it uses less digits than its factorization.

64564161240216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244561216839 (or 244561216835 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 64564161240216 in words is "sixty-four trillion, five hundred sixty-four billion, one hundred sixty-one million, two hundred forty thousand, two hundred sixteen".