64618248222 has 72 divisors (see below), whose sum is σ = 155049810552. Its totient is φ = 19288764000.

The previous prime is 64618248221. The next prime is 64618248271. The reversal of 64618248222 is 22284281646.

64618248222 is a `hidden beast` number, since 6 + 4 + 618 + 2 + 4 + 8 + 2 + 22 = 666.

It is a super-2 number, since 2×64618248222² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64618248221) 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 35 ways as a sum of consecutive naturals, for example, 852472 + ... + 925172.

It is an arithmetic number, because the mean of its divisors is an integer number (2153469591).

Almost surely, 2^64618248222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64618248222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77524905276).

64618248222 is an abundant number, since it is smaller than the sum of its proper divisors (90431562330).

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

64618248222 is a wasteful number, since it uses less digits than its factorization.

64618248222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72854 (or 72784 counting only the distinct ones).

The product of its digits is 589824, while the sum is 45.

The spelling of 64618248222 in words is "sixty-four billion, six hundred eighteen million, two hundred forty-eight thousand, two hundred twenty-two".