20404343444032 has 56 divisors (see below), whose sum is σ = 40946456410200. Its totient is φ = 10087135297536.

The previous prime is 20404343443949. The next prime is 20404343444033. The reversal of 20404343444032 is 23044434340402.

It can be written as a sum of positive squares in 4 ways, for example, as 413572465216 + 19990770978816 = 643096^2 + 4471104^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20404343443982 and 20404343444000.

It is not an unprimeable number, because it can be changed into a prime (20404343444033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182267308 + ... + 182379220.

Almost surely, 2^{20404343444032} is an apocalyptic number.

It is an amenable number.

20404343444032 is an abundant number, since it is smaller than the sum of its proper divisors (20542112966168).

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

20404343444032 is a wasteful number, since it uses less digits than its factorization.

20404343444032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144023 (or 144013 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 37.

Adding to 20404343444032 its reverse (23044434340402), we get a palindrome (43448777784434).

The spelling of 20404343444032 in words is "twenty trillion, four hundred four billion, three hundred forty-three million, four hundred forty-four thousand, thirty-two".