20109114405 has 32 divisors (see below), whose sum is σ = 36621486720. Its totient is φ = 10463276160.

The previous prime is 20109114397. The next prime is 20109114419. The reversal of 20109114405 is 50441190102.

20109114405 is a `hidden beast` number, since 201 + 0 + 9 + 11 + 440 + 5 = 666.

It is not a de Polignac number, because 20109114405 - 2³ = 20109114397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1811007 + ... + 1822076.

It is an arithmetic number, because the mean of its divisors is an integer number (1144421460).

Almost surely, 2^20109114405 is an apocalyptic number.

It is an amenable number.

20109114405 is a deficient number, since it is larger than the sum of its proper divisors (16512372315).

20109114405 is a wasteful number, since it uses less digits than its factorization.

20109114405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3633138 (or 3633132 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

It can be divided in two parts, 201091 and 14405, that added together give a triangular number (215496 = T₆₅₆).

The spelling of 20109114405 in words is "twenty billion, one hundred nine million, one hundred fourteen thousand, four hundred five".