20223440440 has 32 divisors (see below), whose sum is σ = 52003133280. Its totient is φ = 6933750912.

The previous prime is 20223440407. The next prime is 20223440473. The reversal of 20223440440 is 4404432202.

It is an interprime number because it is at equal distance from previous prime (20223440407) and next prime (20223440473).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 36113007 + ... + 36113566.

It is an arithmetic number, because the mean of its divisors is an integer number (1625097915).

Almost surely, 2^20223440440 is an apocalyptic number.

20223440440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20223440440 is an abundant number, since it is smaller than the sum of its proper divisors (31779692840).

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

20223440440 is a wasteful number, since it uses less digits than its factorization.

20223440440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72226591 (or 72226587 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

Adding to 20223440440 its reverse (4404432202), we get a palindrome (24627872642).

The spelling of 20223440440 in words is "twenty billion, two hundred twenty-three million, four hundred forty thousand, four hundred forty".