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20054315323 = 72864902189
BaseRepresentation
bin10010101011010101…
…001001000100111011
31220202121201202212101
4102223111021010323
5312032401042243
613113545324231
71306651603420
oct225325110473
956677652771
1020054315323
118561157a19
123a78196677
131b77a14293
14d835c3d47
157c58e954d
hex4ab54913b

20054315323 has 4 divisors (see below), whose sum is σ = 22919217520. Its totient is φ = 17189413128.

The previous prime is 20054315311. The next prime is 20054315327. The reversal of 20054315323 is 32351345002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32351345002 = 216175672501.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-20054315323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20054315291 and 20054315300.

It is not an unprimeable number, because it can be changed into a prime (20054315327) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1432451088 + ... + 1432451101.

It is an arithmetic number, because the mean of its divisors is an integer number (5729804380).

Almost surely, 220054315323 is an apocalyptic number.

20054315323 is a deficient number, since it is larger than the sum of its proper divisors (2864902197).

20054315323 is an equidigital number, since it uses as much as digits as its factorization.

20054315323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2864902196.

The product of its (nonzero) digits is 10800, while the sum is 28.

The spelling of 20054315323 in words is "twenty billion, fifty-four million, three hundred fifteen thousand, three hundred twenty-three".

Divisors: 1 7 2864902189 20054315323