20411033304156 has 96 divisors (see below), whose sum is σ = 52250499813120. Its totient is φ = 6150080563200.

The previous prime is 20411033304091. The next prime is 20411033304173. The reversal of 20411033304156 is 65140333011402.

It is a super-2 number, since 2×20411033304156² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29431020 + ... + 30116556.

It is an arithmetic number, because the mean of its divisors is an integer number (544276039720).

Almost surely, 2^{20411033304156} 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 20411033304156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26125249906560).

20411033304156 is an abundant number, since it is smaller than the sum of its proper divisors (31839466508964).

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

20411033304156 is a wasteful number, since it uses less digits than its factorization.

20411033304156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686835 (or 686833 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 20411033304156 its reverse (65140333011402), we get a palindrome (85551366315558).

The spelling of 20411033304156 in words is "twenty trillion, four hundred eleven billion, thirty-three million, three hundred four thousand, one hundred fifty-six".