20011044424240 has 80 divisors (see below), whose sum is σ = 46664613621792. Its totient is φ = 7980519739392.

The previous prime is 20011044424219. The next prime is 20011044424247. The reversal of 20011044424240 is 4242444011002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 20011044424199 and 20011044424208.

It is not an unprimeable number, because it can be changed into a prime (20011044424247) 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, 314128072 + ... + 314191768.

Almost surely, 2^{20011044424240} is an apocalyptic number.

20011044424240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011044424240 is an abundant number, since it is smaller than the sum of its proper divisors (26653569197552).

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

20011044424240 is a wasteful number, since it uses less digits than its factorization.

20011044424240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75374 (or 75368 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 20011044424240 its reverse (4242444011002), we get a palindrome (24253488435242).

The spelling of 20011044424240 in words is "twenty trillion, eleven billion, forty-four million, four hundred twenty-four thousand, two hundred forty".