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8172137539 is a prime number
BaseRepresentation
bin1111001110001100…
…01110110001000011
3210002112022121012201
413213012032301003
5113214031400124
63430525134031
7406341010606
oct74706166103
923075277181
108172137539
113513a5a985
1217009ba317
13a030c3357
145774b633d
1532c69e144
hex1e718ec43

8172137539 has 2 divisors, whose sum is σ = 8172137540. Its totient is φ = 8172137538.

The previous prime is 8172137489. The next prime is 8172137569. The reversal of 8172137539 is 9357312718.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8172137539 - 27 = 8172137411 is a prime.

It is not a weakly prime, because it can be changed into another prime (8172137569) 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 as a sum of consecutive naturals, namely, 4086068769 + 4086068770.

It is an arithmetic number, because the mean of its divisors is an integer number (4086068770).

Almost surely, 28172137539 is an apocalyptic number.

8172137539 is a deficient number, since it is larger than the sum of its proper divisors (1).

8172137539 is an equidigital number, since it uses as much as digits as its factorization.

8172137539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 46.

The square root of 8172137539 is about 90399.8757687199. The cubic root of 8172137539 is about 2014.2431208828.

The spelling of 8172137539 in words is "eight billion, one hundred seventy-two million, one hundred thirty-seven thousand, five hundred thirty-nine".