20001240040224 has 24 divisors (see below), whose sum is σ = 52503255105840. Its totient is φ = 6667080013376.

The previous prime is 20001240040121. The next prime is 20001240040231. The reversal of 20001240040224 is 42204004210002.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 20001240040224.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104173125114 + ... + 104173125305.

It is an arithmetic number, because the mean of its divisors is an integer number (2187635629410).

Almost surely, 2^{20001240040224} is an apocalyptic number.

20001240040224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20001240040224 is an abundant number, since it is smaller than the sum of its proper divisors (32502015065616).

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

20001240040224 is a wasteful number, since it uses less digits than its factorization.

20001240040224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208346250432 (or 208346250424 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 20001240040224 its reverse (42204004210002), we get a palindrome (62205244250226).

The spelling of 20001240040224 in words is "twenty trillion, one billion, two hundred forty million, forty thousand, two hundred twenty-four".