20024004404640 has 48 divisors (see below), whose sum is σ = 63075613876128. Its totient is φ = 5339734507776.

The previous prime is 20024004404627. The next prime is 20024004404641. The reversal of 20024004404640 is 4640440042002.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 20024004404598 and 20024004404607.

It is not an unprimeable number, because it can be changed into a prime (20024004404641) 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, 20858337442 + ... + 20858338401.

It is an arithmetic number, because the mean of its divisors is an integer number (1314075289086).

Almost surely, 2^{20024004404640} is an apocalyptic number.

20024004404640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20024004404640 is an abundant number, since it is smaller than the sum of its proper divisors (43051609471488).

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

20024004404640 is a wasteful number, since it uses less digits than its factorization.

20024004404640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41716675861 (or 41716675853 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 20024004404640 its reverse (4640440042002), we get a palindrome (24664444446642).

The spelling of 20024004404640 in words is "twenty trillion, twenty-four billion, four million, four hundred four thousand, six hundred forty".