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29718254887 is a prime number
BaseRepresentation
bin11011101011010110…
…001001010100100111
32211201010010202201221
4123223112021110213
5441330333124022
621352525201211
72101305666346
oct335326112447
984633122657
1029718254887
11116701a8832
125914700207
132a57bb9309
14161cc67b5d
15b8e023cc7
hex6eb589527

29718254887 has 2 divisors, whose sum is σ = 29718254888. Its totient is φ = 29718254886.

The previous prime is 29718254869. The next prime is 29718254933. The reversal of 29718254887 is 78845281792.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-29718254887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29718254807) 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 as a sum of consecutive naturals, namely, 14859127443 + 14859127444.

It is an arithmetic number, because the mean of its divisors is an integer number (14859127444).

Almost surely, 229718254887 is an apocalyptic number.

29718254887 is a deficient number, since it is larger than the sum of its proper divisors (1).

29718254887 is an equidigital number, since it uses as much as digits as its factorization.

29718254887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18063360, while the sum is 61.

The spelling of 29718254887 in words is "twenty-nine billion, seven hundred eighteen million, two hundred fifty-four thousand, eight hundred eighty-seven".