20003513450044 has 24 divisors (see below), whose sum is σ = 35153104331520. Its totient is φ = 9959770514736.

The previous prime is 20003513450033. The next prime is 20003513450069. The reversal of 20003513450044 is 44005431530002.

It is a junction number, because it is equal to n+sod(n) for n = 20003513449988 and 20003513450015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131954539 + ... + 132106045.

It is an arithmetic number, because the mean of its divisors is an integer number (1464712680480).

Almost surely, 2^{20003513450044} is an apocalyptic number.

It is an amenable number.

20003513450044 is a deficient number, since it is larger than the sum of its proper divisors (15149590881476).

20003513450044 is a wasteful number, since it uses less digits than its factorization.

20003513450044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289857 (or 289855 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 20003513450044 its reverse (44005431530002), we get a palindrome (64008944980046).

The spelling of 20003513450044 in words is "twenty trillion, three billion, five hundred thirteen million, four hundred fifty thousand, forty-four".