20320105215411 has 48 divisors (see below), whose sum is σ = 29618751651840. Its totient is φ = 13423885338240.

The previous prime is 20320105215409. The next prime is 20320105215433. The reversal of 20320105215411 is 11451250102302.

It is a happy number.

20320105215411 is a `hidden beast` number, since 2 + 0 + 3 + 20 + 10 + 5 + 215 + 411 = 666.

It is not a de Polignac number, because 20320105215411 - 2¹ = 20320105215409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20320105215461) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 871086430 + ... + 871109756.

It is an arithmetic number, because the mean of its divisors is an integer number (617057326080).

Almost surely, 2^{20320105215411} is an apocalyptic number.

20320105215411 is a deficient number, since it is larger than the sum of its proper divisors (9298646436429).

20320105215411 is a wasteful number, since it uses less digits than its factorization.

20320105215411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25456 (or 25453 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 20320105215411 its reverse (11451250102302), we get a palindrome (31771355317713).

The spelling of 20320105215411 in words is "twenty trillion, three hundred twenty billion, one hundred five million, two hundred fifteen thousand, four hundred eleven".