20123001044 has 12 divisors (see below), whose sum is σ = 35240909844. Its totient is φ = 10054169664.

The previous prime is 20123001013. The next prime is 20123001049. The reversal of 20123001044 is 44010032102.

It can be written as a sum of positive squares in 2 ways, for example, as 15850810000 + 4272191044 = 125900^2 + 65362^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123001049) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1826537 + ... + 1837520.

It is an arithmetic number, because the mean of its divisors is an integer number (2936742487).

Almost surely, 2^20123001044 is an apocalyptic number.

It is an amenable number.

20123001044 is a deficient number, since it is larger than the sum of its proper divisors (15117908800).

20123001044 is a wasteful number, since it uses less digits than its factorization.

20123001044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3665434 (or 3665432 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20123001044 its reverse (44010032102), we get a palindrome (64133033146).

The spelling of 20123001044 in words is "twenty billion, one hundred twenty-three million, one thousand, forty-four".