20404422240216 has 128 divisors (see below), whose sum is σ = 61446536755200. Its totient is φ = 5522602176000.

The previous prime is 20404422240199. The next prime is 20404422240227. The reversal of 20404422240216 is 61204222440402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39252160 + ... + 39768591.

It is an arithmetic number, because the mean of its divisors is an integer number (480051068400).

Almost surely, 2^{20404422240216} is an apocalyptic number.

It is an amenable number.

20404422240216 is an abundant number, since it is smaller than the sum of its proper divisors (41042114514984).

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

20404422240216 is a wasteful number, since it uses less digits than its factorization.

20404422240216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79020849 (or 79020845 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 33.

Adding to 20404422240216 its reverse (61204222440402), we get a palindrome (81608644680618).

The spelling of 20404422240216 in words is "twenty trillion, four hundred four billion, four hundred twenty-two million, two hundred forty thousand, two hundred sixteen".