20004421411646 has 8 divisors (see below), whose sum is σ = 34293293848560. Its totient is φ = 8573323462128.

The previous prime is 20004421411577. The next prime is 20004421411669. The reversal of 20004421411646 is 64611412440002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 714443621831 + ... + 714443621858.

It is an arithmetic number, because the mean of its divisors is an integer number (4286661731070).

Almost surely, 2^{20004421411646} is an apocalyptic number.

20004421411646 is a deficient number, since it is larger than the sum of its proper divisors (14288872436914).

20004421411646 is a wasteful number, since it uses less digits than its factorization.

20004421411646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428887243698.

The product of its (nonzero) digits is 36864, while the sum is 35.

Adding to 20004421411646 its reverse (64611412440002), we get a palindrome (84615833851648).

The spelling of 20004421411646 in words is "twenty trillion, four billion, four hundred twenty-one million, four hundred eleven thousand, six hundred forty-six".