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20478611183 is a prime number
BaseRepresentation
bin10011000100100111…
…101100111011101111
31221212012010020100212
4103010213230323233
5313420011024213
613224023413035
71323323215532
oct230447547357
957765106325
1020478611183
118759707758
123b762b417b
131c148b1414
14dc3ab0a19
157eccab9a8
hex4c49eceef

20478611183 has 2 divisors, whose sum is σ = 20478611184. Its totient is φ = 20478611182.

The previous prime is 20478611159. The next prime is 20478611291. The reversal of 20478611183 is 38111687402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20478611183 - 212 = 20478607087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20478611183.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20478610183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10239305591 + 10239305592.

It is an arithmetic number, because the mean of its divisors is an integer number (10239305592).

Almost surely, 220478611183 is an apocalyptic number.

20478611183 is a deficient number, since it is larger than the sum of its proper divisors (1).

20478611183 is an equidigital number, since it uses as much as digits as its factorization.

20478611183 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 41.

The spelling of 20478611183 in words is "twenty billion, four hundred seventy-eight million, six hundred eleven thousand, one hundred eighty-three".