20005541311 has 8 divisors (see below), whose sum is σ = 22950411264. Its totient is φ = 17082405240.

The previous prime is 20005541293. The next prime is 20005541317. The reversal of 20005541311 is 11314550002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20005541311 - 2⁷ = 20005541183 is a prime.

It is a super-2 number, since 2×20005541311² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20005541317) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5431495 + ... + 5435176.

It is an arithmetic number, because the mean of its divisors is an integer number (2868801408).

Almost surely, 2^20005541311 is an apocalyptic number.

20005541311 is a deficient number, since it is larger than the sum of its proper divisors (2944869953).

20005541311 is a wasteful number, since it uses less digits than its factorization.

20005541311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10866941.

The product of its (nonzero) digits is 600, while the sum is 22.

The spelling of 20005541311 in words is "twenty billion, five million, five hundred forty-one thousand, three hundred eleven".