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9998597551 is a prime number
BaseRepresentation
bin10010100111111011…
…00111110110101111
3221210211010101022211
421103331213312233
5130434120110201
64332052351251
7502526451115
oct112375476657
927724111284
109998597551
114270a47368
121b30615527
13c34619017
146abcb9ab5
153d7bd2651
hex253f67daf

9998597551 has 2 divisors, whose sum is σ = 9998597552. Its totient is φ = 9998597550.

The previous prime is 9998597527. The next prime is 9998597569. The reversal of 9998597551 is 1557958999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9998597551 - 27 = 9998597423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9998597501) by changing a digit.

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 as a sum of consecutive naturals, namely, 4999298775 + 4999298776.

It is an arithmetic number, because the mean of its divisors is an integer number (4999298776).

Almost surely, 29998597551 is an apocalyptic number.

9998597551 is a deficient number, since it is larger than the sum of its proper divisors (1).

9998597551 is an equidigital number, since it uses as much as digits as its factorization.

9998597551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45927000, while the sum is 67.

The square root of 9998597551 is about 99992.9875091249. The cubic root of 9998597551 is about 2154.3339691640. Note that the first 3 decimals are identical.

The spelling of 9998597551 in words is "nine billion, nine hundred ninety-eight million, five hundred ninety-seven thousand, five hundred fifty-one".