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20013056044405 = 516355744085991
BaseRepresentation
bin1001000110011101001110…
…00110001010110101110101
32121212020012021201021120221
410203032213012022311311
510110343214321410110
6110321512050254341
74133616120410164
oct443164706126565
977766167637527
1020013056044405
116416542441486
1222b27b7b873b1
13b222b91790b8
144d28cc2153db
1524a8bb1a87da
hex1233a718ad75

20013056044405 has 16 divisors (see below), whose sum is σ = 24206383799424. Its totient is φ = 15883653165120.

The previous prime is 20013056044381. The next prime is 20013056044427. The reversal of 20013056044405 is 50444065031002.

It is not a de Polignac number, because 20013056044405 - 27 = 20013056044277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21589041 + ... + 22496950.

It is an arithmetic number, because the mean of its divisors is an integer number (1512898987464).

Almost surely, 220013056044405 is an apocalyptic number.

It is an amenable number.

20013056044405 is a deficient number, since it is larger than the sum of its proper divisors (4193327755019).

20013056044405 is a wasteful number, since it uses less digits than its factorization.

20013056044405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44086716.

The product of its (nonzero) digits is 57600, while the sum is 34.

The spelling of 20013056044405 in words is "twenty trillion, thirteen billion, fifty-six million, forty-four thousand, four hundred five".

Divisors: 1 5 163 557 815 2785 90791 453955 44085991 220429955 7186016533 24555896987 35930082665 122779484935 4002611208881 20013056044405