20411653216 has 48 divisors (see below), whose sum is σ = 40900885200. Its totient is φ = 10024419328.

The previous prime is 20411653169. The next prime is 20411653259. The reversal of 20411653216 is 61235611402.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2656356 + ... + 2664028.

It is an arithmetic number, because the mean of its divisors is an integer number (852101775).

Almost surely, 2^20411653216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20411653216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20450442600).

20411653216 is an abundant number, since it is smaller than the sum of its proper divisors (20489231984).

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

20411653216 is a wasteful number, since it uses less digits than its factorization.

20411653216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9151 (or 9143 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 20411653216 in words is "twenty billion, four hundred eleven million, six hundred fifty-three thousand, two hundred sixteen".