20111444032 has 28 divisors (see below), whose sum is σ = 39913700716. Its totient is φ = 10054448640.

The previous prime is 20111444011. The next prime is 20111444051. The reversal of 20111444032 is 23044411102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9242130496 + 10869313536 = 96136^2 + 104256^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20111443994 and 20111444012.

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, 680638 + ... + 709570.

Almost surely, 2^20111444032 is an apocalyptic number.

It is an amenable number.

20111444032 is a deficient number, since it is larger than the sum of its proper divisors (19802256684).

20111444032 is a wasteful number, since it uses less digits than its factorization.

20111444032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39806 (or 39796 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 20111444032 its reverse (23044411102), we get a palindrome (43155855134).

The spelling of 20111444032 in words is "twenty billion, one hundred eleven million, four hundred forty-four thousand, thirty-two".