20411152365220 has 96 divisors (see below), whose sum is σ = 44837304019200. Its totient is φ = 7795067180544.

The previous prime is 20411152365157. The next prime is 20411152365271. The reversal of 20411152365220 is 2256325111402.

It is a happy 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, 31478727 + ... + 32120593.

It is an arithmetic number, because the mean of its divisors is an integer number (467055250200).

Almost surely, 2^{20411152365220} is an apocalyptic number.

20411152365220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20411152365220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22418652009600).

20411152365220 is an abundant number, since it is smaller than the sum of its proper divisors (24426151653980).

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

20411152365220 is a wasteful number, since it uses less digits than its factorization.

20411152365220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642517 (or 642515 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 20411152365220 its reverse (2256325111402), we get a palindrome (22667477476622).

The spelling of 20411152365220 in words is "twenty trillion, four hundred eleven billion, one hundred fifty-two million, three hundred sixty-five thousand, two hundred twenty".