20043432223240 has 16 divisors (see below), whose sum is σ = 45097722502380. Its totient is φ = 8017372889280.

The previous prime is 20043432223237. The next prime is 20043432223289. The reversal of 20043432223240 is 4232223434002.

It can be written as a sum of positive squares in 2 ways, for example, as 19826020780164 + 217411443076 = 4452642^2 + 466274^2 .

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, 250542902751 + ... + 250542902830.

Almost surely, 2^{20043432223240} is an apocalyptic number.

20043432223240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20043432223240 is an abundant number, since it is smaller than the sum of its proper divisors (25054290279140).

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

20043432223240 is a wasteful number, since it uses less digits than its factorization.

20043432223240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501085805592 (or 501085805588 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 31.

Adding to 20043432223240 its reverse (4232223434002), we get a palindrome (24275655657242).

The spelling of 20043432223240 in words is "twenty trillion, forty-three billion, four hundred thirty-two million, two hundred twenty-three thousand, two hundred forty".