64266022220 has 24 divisors (see below), whose sum is σ = 135021189408. Its totient is φ = 25694496000.

The previous prime is 64266022157. The next prime is 64266022229. The reversal of 64266022220 is 2222066246.

It is a super-2 number, since 2×64266022220² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64266022229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 700256 + ... + 786695.

It is an arithmetic number, because the mean of its divisors is an integer number (5625882892).

Almost surely, 2^64266022220 is an apocalyptic number.

It is an amenable number.

64266022220 is an abundant number, since it is smaller than the sum of its proper divisors (70755167188).

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

64266022220 is a wasteful number, since it uses less digits than its factorization.

64266022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489121 (or 1489119 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 64266022220 its reverse (2222066246), we get a palindrome (66488088466).

The spelling of 64266022220 in words is "sixty-four billion, two hundred sixty-six million, twenty-two thousand, two hundred twenty".