20223333444640 has 24 divisors (see below), whose sum is σ = 47777625263340. Its totient is φ = 8089333377792.

The previous prime is 20223333444583. The next prime is 20223333444673. The reversal of 20223333444640 is 4644433332202.

It can be written as a sum of positive squares in 2 ways, for example, as 20223332785296 + 659344 = 4497036^2 + 812^2 .

It is a super-2 number, since 2×20223333444640² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 20223333444593 and 20223333444602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63197916855 + ... + 63197917174.

Almost surely, 2^{20223333444640} is an apocalyptic number.

20223333444640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20223333444640 is an abundant number, since it is smaller than the sum of its proper divisors (27554291818700).

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

20223333444640 is a wasteful number, since it uses less digits than its factorization.

20223333444640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126395834044 (or 126395834036 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 40.

Adding to 20223333444640 its reverse (4644433332202), we get a palindrome (24867766776842).

The spelling of 20223333444640 in words is "twenty trillion, two hundred twenty-three billion, three hundred thirty-three million, four hundred forty-four thousand, six hundred forty".