64004224220 has 36 divisors (see below), whose sum is σ = 141855361704. Its totient is φ = 24254229600.

The previous prime is 64004224217. The next prime is 64004224223. The reversal of 64004224220 is 2242240046.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (64004224217) and next prime (64004224223).

It is a self number, because there is not a number n which added to its sum of digits gives 64004224220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64004224223) 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 11 ways as a sum of consecutive naturals, for example, 4425206 + ... + 4439645.

It is an arithmetic number, because the mean of its divisors is an integer number (3940426714).

Almost surely, 2^64004224220 is an apocalyptic number.

It is an amenable number.

64004224220 is an abundant number, since it is smaller than the sum of its proper divisors (77851137484).

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

64004224220 is a wasteful number, since it uses less digits than its factorization.

64004224220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8864898 (or 8864877 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 64004224220 its reverse (2242240046), we get a palindrome (66246464266).

The spelling of 64004224220 in words is "sixty-four billion, four million, two hundred twenty-four thousand, two hundred twenty".