20503444032 has 112 divisors (see below), whose sum is σ = 61905611520. Its totient is φ = 6649744896.

The previous prime is 20503444021. The next prime is 20503444037. The reversal of 20503444032 is 23044430502.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20503443987 and 20503444005.

It is not an unprimeable number, because it can be changed into a prime (20503444037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96408 + ... + 224279.

Almost surely, 2^20503444032 is an apocalyptic number.

It is an amenable number.

20503444032 is an abundant number, since it is smaller than the sum of its proper divisors (41402167488).

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

20503444032 is a wasteful number, since it uses less digits than its factorization.

20503444032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320745 (or 320729 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

Adding to 20503444032 its reverse (23044430502), we get a palindrome (43547874534).

The spelling of 20503444032 in words is "twenty billion, five hundred three million, four hundred forty-four thousand, thirty-two".