65117052220612 has 96 divisors (see below), whose sum is σ = 135147893368320. Its totient is φ = 26877218135040.

The previous prime is 65117052220543. The next prime is 65117052220673. The reversal of 65117052220612 is 21602225071156.

It is a happy number.

65117052220612 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-3 number, since 3×65117052220612³ (a number of 42 digits) contains 333 as substring.

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 31 ways as a sum of consecutive naturals, for example, 22778968 + ... + 25477744.

It is an arithmetic number, because the mean of its divisors is an integer number (1407790555920).

Almost surely, 2^{65117052220612} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65117052220612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67573946684160).

65117052220612 is an abundant number, since it is smaller than the sum of its proper divisors (70030841147708).

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

65117052220612 is a wasteful number, since it uses less digits than its factorization.

65117052220612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2699141 (or 2699139 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

Adding to 65117052220612 its reverse (21602225071156), we get a palindrome (86719277291768).

The spelling of 65117052220612 in words is "sixty-five trillion, one hundred seventeen billion, fifty-two million, two hundred twenty thousand, six hundred twelve".