20123000444 has 12 divisors (see below), whose sum is σ = 35234186568. Its totient is φ = 10056090000.

The previous prime is 20123000437. The next prime is 20123000467. The reversal of 20123000444 is 44400032102.

It is a congruent number.

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, 1344182 + ... + 1359069.

It is an arithmetic number, because the mean of its divisors is an integer number (2936182214).

Almost surely, 2^20123000444 is an apocalyptic number.

It is an amenable number.

20123000444 is a deficient number, since it is larger than the sum of its proper divisors (15111186124).

20123000444 is a wasteful number, since it uses less digits than its factorization.

20123000444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2705116 (or 2705114 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20123000444 its reverse (44400032102), we get a palindrome (64523032546).

The spelling of 20123000444 in words is "twenty billion, one hundred twenty-three million, four hundred forty-four", and thus it is an aban number.