20203423444 has 48 divisors (see below), whose sum is σ = 37507579200. Its totient is φ = 9495532800.

The previous prime is 20203423433. The next prime is 20203423489. The reversal of 20203423444 is 44432430202.

It is a happy number.

It is a super-2 number, since 2×20203423444² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7165467 + ... + 7168285.

It is an arithmetic number, because the mean of its divisors is an integer number (781407900).

Almost surely, 2^20203423444 is an apocalyptic number.

It is an amenable number.

20203423444 is a deficient number, since it is larger than the sum of its proper divisors (17304155756).

20203423444 is a wasteful number, since it uses less digits than its factorization.

20203423444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3544 (or 3542 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 20203423444 its reverse (44432430202), we get a palindrome (64635853646).

The spelling of 20203423444 in words is "twenty billion, two hundred three million, four hundred twenty-three thousand, four hundred forty-four".