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38506580069 is a prime number
BaseRepresentation
bin100011110111001010…
…111100100001100101
310200101120220221111012
4203313022330201211
51112330141030234
625404545352005
72532141346556
oct436712744145
9120346827435
1038506580069
111536aa625a1
127567938605
133828855329
141c140dc32d
15100583c0ce
hex8f72bc865

38506580069 has 2 divisors, whose sum is σ = 38506580070. Its totient is φ = 38506580068.

The previous prime is 38506580053. The next prime is 38506580083. The reversal of 38506580069 is 96008560583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24091696225 + 14414883844 = 155215^2 + 120062^2 .

It is a cyclic number.

It is not a de Polignac number, because 38506580069 - 24 = 38506580053 is a prime.

It is a super-3 number, since 3×385065800693 (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 38506579999 and 38506580026.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38506580669) 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, 19253290034 + 19253290035.

It is an arithmetic number, because the mean of its divisors is an integer number (19253290035).

Almost surely, 238506580069 is an apocalyptic number.

It is an amenable number.

38506580069 is a deficient number, since it is larger than the sum of its proper divisors (1).

38506580069 is an equidigital number, since it uses as much as digits as its factorization.

38506580069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 50.

The spelling of 38506580069 in words is "thirty-eight billion, five hundred six million, five hundred eighty thousand, sixty-nine".